how to cite a research article apa in text

APA (7th Edition) Referencing Guide

• Information for EndNote Users
• Authors - Numbers, Rules and Formatting

Everything must match!

Types of citations, in-text citations, quoting, summarising and paraphrasing, example text with in-text referencing, slightly tricky in-text citations, organisation as an author, secondary citation (works referred to in other works).

• Reference List
• Books & eBooks
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• Journal Articles
• Conference Papers
• Newspaper Articles
• Web Pages & Documents
• Specialised Health Databases
• Using Visual Works in Assignments & Class Presentations
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• Custom Textbooks & Books of Readings
• ABS AND AIHW
• Videos (YouTube), Podcasts & Webinars
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• First Nations Works
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• Miscellaneous (Generic Reference)
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• What If...?
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There are two basic ways to cite someone's work in text.

In narrative citations , the authors are part of the sentence - you are referring to them by name. For example:

Becker (2013) defined gamification as giving the mechanics of principles of a game to other activities.

Cho and Castañeda (2019) noted that game-like activities are frequently used in language classes that adopt mobile and computer technologies.

In parenthetical citations , the authors are not mentioned in the sentence, just the content of their work. Place the citation at the end of the sentence or clause where you have used their information. The author's names are placed in the brackets (parentheses) with the rest of the citation details:

Gamification involves giving the mechanics or principles of a game to another activity (Becker, 2013).

Increasingly, game-like activities are frequently used in language classes that adopt mobile and computer technologies (Cho & Castañeda, 2019).

Using references in text

For APA, you use the authors' surnames only and the year in text. If you are using a direct quote, you will also need to use a page number.

Narrative citations:

If an in-text citation has the authors' names as part of the sentence (that is, outside of brackets) place the year and page numbers in brackets immediately after the name, and use 'and' between the authors' names:  Jones and Smith (2020, p. 29)

Parenthetical citations:

If an in-text citation has the authors' names in brackets use "&" between the authors' names :  (Jones & Smith, 2020, p. 29).

Note: Some lecturers want page numbers for all citations, while some only want page numbers with direct quotes. Check with your lecturer to see what you need to do for your assignment. If the direct quote starts on one page and finishes on another, include the page range (Jones & Smith, 2020, pp. 29-30).

1 author

Smith (2020) found that "the mice disappeared within minutes" (p. 29).

The author stated "the mice disappeared within minutes" (Smith, 2020, p. 29).

Jones and Smith (2020) found that "the mice disappeared within minutes" (p. 29).

The authors stated "the mice disappeared within minutes" (Jones & Smith, 2020, p. 29).

For 3 or more authors , use the first author and "et al." for all in-text citations

Green et al.'s (2019) findings indicated that the intervention was not based on evidence from clinical trials.

It appears the intervention was not based on evidence from clinical trials (Green et al., 2019).

If you cite more than one work in the same set of brackets in text , your citations will go in the same order in which they will appear in your reference list (i.e. alphabetical order, then oldest to newest for works by the same author) and be separated by a semi-colon. E.g.:

• (Corbin, 2015; James & Waterson, 2017; Smith et al., 2016).
• (Corbin, 2015; 2018)
• (Queensland Health, 2017a; 2017b)
• Use only the   surnames   of your authors   in text   (e.g., Smith & Brown, 2014) - however, if you have two authors with the same surname who have published in the same year, then you will need to use their initials to distinguish between the two of them (e.g., K. Smith, 2014; N. Smith, 2014).   Otherwise, do not use initials in text .

If your author isn't an "author".

Whoever is in the "author" position of the refence in the references list is treated like an author in text. So, for example, if you had an edited book and the editors of the book were in the "author" position at the beginning of the reference, you would treat them exactly the same way as you would an author - do not include any other information. The same applies for works where the "author" is an illustrator, producer, composer, etc.

• Summarising
• Paraphrasing

It is always a good idea to keep direct quotes to a minimum. Quoting doesn't showcase your writing ability - all it shows is that you can read (plus, lecturers hate reading assignments with a lot of quotes).

You should only use direct quotes if the exact wording is important , otherwise it is better to paraphrase.

If you feel a direct quote is appropriate, try to keep only the most important part of the quote and avoid letting it take up the entire sentence - always start or end the sentence with your own words to tie the quote back into your assignment. Long quotes (more than 40 words) are called "block quotes" and are rarely used in most subject areas (they mostly belong in Literature, History or similar subjects). Each referencing style has rules for setting out a block quote. Check with your style guide .

It has been observed that "pink fairy armadillos seem to be extremely susceptible to stress" (Superina, 2011, p. 6).

NB! Most referencing styles will require a page number to tell readers where to find the original quote.

It is a type of paraphrasing, and you will be using this frequently in your assignments, but note that summarising another person's work or argument isn't showing how you make connections or understand implications. This is preferred to quoting, but where possible try to go beyond simply summarising another person's information without "adding value".

And, remember, the words must be your own words . If you use the exact wording from the original at any time, those words must be treated as a direct quote.

All information must be cited, even if it is in your own words.

Superina (2011) observed a captive pink fairy armadillo, and noticed any variation in its environment could cause great stress.

NB! Some lecturers and citation styles want page numbers for everything you cite, others only want page numbers for direct quotes. Check with your lecturer.

Paraphrasing often involves commenting about the information at the same time, and this is where you can really show your understanding of the topic. You should try to do this within every paragraph in the body of your assignment.

When paraphrasing, it is important to remember that using a thesaurus to change every other word isn't really paraphrasing. It's patchwriting , and it's a kind of plagiarism (as you are not creating original work).

Use your own voice! You sound like you when you write - you have a distinctive style that is all your own, and when your "tone" suddenly changes for a section of your assignment, it looks highly suspicious. Your lecturer starts to wonder if you really wrote that part yourself. Make sure you have genuinely thought about how *you* would write this information, and that the paraphrasing really is in your own words.

Always cite your sources! Even if you have drawn from three different papers to write this one sentence, which is completely in your own words, you still have to cite your sources for that sentence (oh, and excellent work, by the way).

Captive pink fairy armadillos do not respond well to changes in their environment and can be easily stressed (Superina, 2011).

NB! Some lecturers and citation styles want page numbers for all citations, others only want them for direct quotes. Check with your lecturer.

This example paragraph contains mouse-over text. Run your mouse over the paragraph to see notes on formatting.

Excerpt from "The Big Fake Essay"

You can read the entire Big Fake Essay on the Writing Guide. It includes more details about academic writing and the formatting of essays.

• The Big Fake Essay
• Academic Writing Workshop

When you have multiple authors with the same surname who published in the same year:

If your authors have different initials, then include the initials:

As A. Smith (2016) noted...

...which was confirmed by J.G. Smith's (2016) study.

(A. Smith, 2016; J. G. Smith, 2016).

If your authors have the same initials, then include the name:

As Adam Smith noted...

...which was confirmed by Amy Smith's (2016) study.

(Adam Smith, 2016; Amy Smith, 2016).

Note: In your reference list, you would include the author's first name in [square brackets] after their initials:

Smith, A. [Adam]. (2016)...

Smith, A. [Amy]. (2016)...

When you have multiple works by the same author in the same year:

In your reference list, you will have arranged the works alphabetically by title (see the page on Reference Lists for more information). This decides which reference is "a", "b", "c", and so on. You cite them in text accordingly:

Asthma is the most common disease affecting the Queensland population (Queensland Health, 2017b). However, many people do not know how to manage their asthma symptoms (Queensland Health, 2017a).

When you have multiple works by the same author in different years:

Asthma is the most common disease affecting the Queensland population (Queensland Health, 2017, 2018). 

When you do not have an author, and your reference list entry begins with the title:

Use the title in place of the author's name, and place it in "quotation marks" if it is the title of an article or book chapter, or in italics if the title would go in italics in your reference list:

During the 2017 presidential inauguration, there were some moments of awkwardness ("Mrs. Obama Says ‘Lovely Frame’", 2018).

Note: You do not need to use the entire title, but a reasonable portion so that it does not end too abruptly - "Mrs. Obama Says" would be too abrupt, but the full title "Mrs. Obama Says 'Lovely Frame' in Box During Awkward Handoff" is unecessarily long. You should also use title case for titles when referring to them in the text of your work.

If there are no page numbers, you can include any of the following in the in-text citation:

• "On Australia Day 1938 William Cooper ... joined forces with Jack Patten and William Ferguson ... to hold a Day of Mourning to draw attention to the losses suffered by Aboriginal people at the hands of the whiteman" (National Museum of Australia, n.d., para. 4).
• "in 1957 news of a report by the Western Australian government provided the catalyst for a reform movement" (National Museum of Australia, n.d., The catalyst for change section, para. 1)
• "By the end of this year of intense activity over 100,000 signatures had been collected" (National Museum of Australia, n.d., "petition gathering", para. 1).

When you are citing a classical work, like the Bible or the Quran:

References to works of scripture or other classical works are treated differently to regular citations. See the APA Blog's entry for more details:

Happy Holiday Citing: Citation of Classical Works . (Please note, this document is from the 6th edition of APA).

In text citation:

If the name of the organisation first appears in a narrative citation, include the abbreviation before the year in brackets, separated with a comma. Use the official acronym/abreviation if you can find it. Otherwise check with your lecturer for permission to create your own acronyms.

Australian Bureau of Statistics (ABS, 2013) shows that...

The Queensland Department of Education (DoE, 2020) encourages students to... (please note, Queensland isn't part of the department's name, it is used in the sentence to provide clarity)

If the name of the organisation first appears in a citation in brackets, include the abbreviation in square brackets.

(Australian Bureau of Statistics [ABS], 2013)

(Department of Education [DoE], 2020)

In the second and subsequent citations, only include the abbreviation or acronym

ABS  (2013) found that ...

DoE (2020) instructs teachers to...

This is disputed ( ABS , 2013).

Resources are designed to support "emotional learning pedagogy" (DoE, 2020)

In the reference list:

Use the full name of the organisation in the reference list.

Australian Institute of Health and Welfare. (2017).  Australia's welfare 2017 . https://www.aihw.gov.au/reports/australias-welfare/australias-welfare-2017/contents/table-of-contents

Department of Education. (2020, April 22). Respectful relationships education program . Queensland Government. https://education.qld.gov.au/curriculum/stages-of-schooling/respectful-relationships

Academically, it is better to find the original source and reference that.

If you do have to quote a secondary source:

• In the text you must cite the original author of the quote and the year the original quote was written as well as the source you read it in. If you do not know the year the original citation was written, omit the year.
• In the reference list you only list the source that you actually read.

Wembley (1997, as cited in Olsen, 1999) argues that impending fuel shortages ...

Wembley claimed that "fuel shortages are likely" (1997, as cited in Olsen, 1999, pp. 10-12).

Some have noted that fuel shortages are probable in the future (Wembley, 1997, as cited in Olsen, 1999).

Olsen, M. (1999).  My career.  Gallimard.

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Apa quick citation guide.

• In-text Citation
• Citing Generative AI
• Citing Web Pages and Social Media
• Citing Articles
• Citing Books
• Citing Business Reports
• Other Formats
• APA Style Quiz

Using In-text Citation

Include an in-text citation when you refer to, summarize, paraphrase, or quote from another source. For every in-text citation in your paper, there must be a corresponding entry in your reference list.

APA in-text citation style uses the author's last name and the year of publication, for example: (Field, 2005). For direct quotations, include the page number as well, for example: (Field, 2005, p. 14). For sources such as websites and e-books that have no page numbers , use a paragraph number, for example: (Field, 2005, para. 1). More information on direct quotation of sources without pagination is given on the APA Style and Grammar Guidelines web page.

Example paragraph with in-text citation

A few researchers in the linguistics field have developed training programs designed to improve native speakers' ability to understand accented speech (Derwing et al., 2002; Thomas, 2004). Their training techniques are based on the research described above indicating that comprehension improves with exposure to non-native speech.   Derwing et al. (2002) conducted their training with students preparing to be social workers, but note that other professionals who work with non-native speakers could benefit from a similar program.

Derwing, T. M., Rossiter, M. J., & Munro, M. J. (2002). Teaching native speakers to listen to foreign-accented speech.  Journal of Multilingual and Multicultural Development , 23 (4), 245-259.

Thomas, H. K. (2004).  Training strategies for improving listeners' comprehension of foreign-accented speech  (Doctoral dissertation). University of Colorado, Boulder.

Citing Web Pages In Text

Cite web pages in text as you would any other source, using the author and date if known. Keep in mind that the author may be an organization rather than a person. For sources with no author, use the title in place of an author.

For sources with no date use n.d. (for no date) in place of the year: (Smith, n.d.). For more information on citations for sources with no date or other missing information see the page on missing reference information on the APA Style and Grammar Guidelines web page. 

Below are examples of using in-text citation with web pages.

Web page with author:

In-text citation

Heavy social media use can be linked to depression and other mental disorders in teens (Asmelash, 2019).

Reference entry

Asmelash, L. (2019, August 14). Social media use may harm teens' mental health by disrupting positive activities, study says . CNN. https://www.cnn.com/2019/08/13/health/social-media-mental-health-trnd/index.html

Web page with organizational author:

More than 300 million people worldwide are affected by depression (World Health Organization, 2018).

World Health Organization. (2018, March 22).  Depression . https://www.who.int/en/news-room/fact-sheets/detail/depression

Web page with no date:

Establishing regular routines, such as exercise, can help survivors of disasters recover from trauma (American Psychological Association [APA], n.d.).

American Psychological Association. (n.d.). Recovering emotionally from disaste r. http://www.apa.org/helpcenter/recovering-disasters.aspx

General Guidelines

In-text references should immediately follow the title, word, or phrase to which they are directly relevant, rather than appearing at the end of long clauses or sentences. In-text references should always precede punctuation marks. Below are examples of using in-text citation.

Author's name in parentheses:

One study found that the most important element in comprehending non-native speech is familiarity with the topic (Gass & Varonis, 1984).

Author's name part of narrative:

Gass and Varonis (1984) found that the most important element in comprehending non-native speech is familiarity with the topic.

Group as author: First citation: (American Psychological Association [APA], 2015) Subsequent citation: (APA, 2015)

Multiple works: (separate each work with semi-colons)

Research shows that listening to a particular accent improves comprehension of accented speech in general (Gass & Varonis, 1984; Krech Thomas, 2004).

Direct quote: (include page number and place quotation marks around the direct quote)

One study found that “the listener's familiarity with the topic of discourse greatly facilitates the interpretation of the entire message” (Gass & Varonis, 1984, p. 85).

Gass and Varonis (1984) found that “the listener’s familiarity with the topic of discourse greatly facilitates the interpretation of the entire message” (p. 85).

Note:  For direct quotations of more than 40 words , display the quote as an indented block of text without quotation marks and include the authors’ names, year, and page number in parentheses at the end of the quote. For example:

This suggests that familiarity with nonnative speech in general, although it is clearly not as important a variable as topic familiarity, may indeed have some effect. That is, prior experience with nonnative speech, such as that gained by listening to the reading, facilitates comprehension. (Gass & Varonis, 1984, p. 77)

Works by Multiple Authors

APA style has specific rules for citing works by multiple authors. Use the following guidelines to determine how to correctly cite works by multiple authors in text. For more information on citing works by multiple authors see the APA Style and Grammar Guidelines page on in-text citation .

Note: When using multiple authors' names as part of your narrative, rather than in parentheses, always spell out the word and. For multiple authors' names within a parenthetic citation, use &.

One author: (Field, 2005)

Two authors: (Gass & Varonis, 1984)

Three or more authors:   (Tremblay et al., 2010)

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Format Your Paper & Cite Your Sources

• APA Style, 7th Edition
• Citing Sources
• Avoid Plagiarism
• MLA Style (8th/9th ed.)

APA Tutorial

Formatting your paper, headings organize your paper (2.27), video tutorials, reference list format (9.43).

• Elements of a Reference

Reference Examples (Chapter 10)

Dois and urls (9.34-9.36), in-text citations.

• In-Text Citations Format
• In-Text Citations for Specific Source Types

NoodleTools

• Chicago Style
• Harvard Style
• Other Styles
• Annotated Bibliographies
• How to Create an Attribution

What is APA Style?

APA style was created by social and behavioral scientists to standardize scientific writing. APA style is most often used in:

• psychology,
• social sciences (sociology, business), and

If you're taking courses in any of these areas, be prepared to use APA style.

For in-depth guidance on using this citation style, refer to Publication Manual of the American Psychological Association , 7th ed. We have several copies available at the MJC Library at the call number  BF 76.7 .P83 2020 .

APA Style, 7th ed.

In October 2019, the American Psychological Association made radical changes its style, especially with regard to the format and citation rules for students writing academic papers. Use this guide to learn how to format and cite your papers using APA Style, 7th edition.

You can start by viewing the  video tutorial .

For help on all aspects of formatting your paper in APA Style, see   The Essentials  page on the APA Style website.

• sans serif fonts such as 11-point Calibri, 11-point Arial, or 10-point Lucida Sans Unicode, or
• serif fonts such as 12-point Times New Roman, 11-point Georgia, or normal (10-point) Computer Modern (the default font for LaTeX)
• There are exceptions for the  title page ,  tables ,  figures ,  footnotes , and  displayed equations .
• Margins :  Use 1-in. margins on every side of the page.
• Align the text of an APA Style  paper to the left margin . Leave the right margin uneven, or “ragged.”
• Do not use full justification for student papers.
• Do not insert hyphens (manual breaks) in words at the end of line. However, it is acceptable if your word-processing program automatically inserts breaks in long hyperlinks (such as in a DOI or URL in a reference list entry).
• Indent the first line of each paragraph of text 0.5 in . from the left margin. Use the tab key or the automatic paragraph-formatting function of your word-processing program to achieve the indentation (the default setting is likely already 0.5 in.). Do not use the space bar to create indentation. 
• There are exceptions for the  title page ,  section labels ,  abstract ,  block quotations ,  headings ,  tables and figures ,  reference list , and  appendices .

Paper Elements

Student papers generally include, at a minimum: 

• Title Page (2.3)
• Text (2.11)
• References  (2.12)

Student papers may include additional elements such as tables and figures depending on the assignment. So, please check with your teacher!

Student papers generally  DO NOT  include the following unless your teacher specifically requests it:

• Running head
• Author note

For complete information on the  order of pages , see the APA Style website.

Number your pages consecutively starting with page 1. Each section begins on a new page. Put the pages in the following order:

• Page 1: Title page
• Page 2: Abstract (if your teacher requires an abstract)
• Page 3: Text 
• References begin on a new page after the last page of text
• Footnotes begin on a new page after the references (if your teacher requires footnotes)
• Tables begin each on a new page after the footnotes (if your teacher requires tables) 
• Figures begin on a new page after the tables (if your teacher requires figures)
• Appendices begin on a new page after the tables and/or figures (if your teacher requires appendices)

Sample Papers With Built-In Instructions

To see what your paper should look like, check out these sample papers with built-in instructions.

APA Style uses five (5) levels of headings to help you organize your paper and allow your audience to identify its key points easily. Levels of headings establish the hierarchy of your sections just like you did in your paper outline.

APA tells us to use "only the number of headings necessary to differentiate distinct section in your paper." Therefore, the number of heading levels you create depends on the length and complexity of your paper.

See the chart below for instructions on formatting your headings:

Use Word to Format Your Paper:

Use Google Docs to Format Your Paper:

Placement:  The reference list  appears at the end of the paper, on its own page(s). If your research paper ends on page 8, your References begin on page 9.

Heading:  Place the section label References  in bold at the top of the page, centered.

Arrangement:  Alphabetize entries by author's last name. If source has no named author, alphabetize by the title, ignoring A, An, or The. (9.44-9.48)

Spacing:  Like the rest of the APA paper, the reference list is double-spaced throughout. Be sure NOT to add extra spaces between citations.

Indentation:  To make citations easier to scan, add a  hanging indent  of 0.5 in. to any citation that runs more than one line. Use the paragraph-formatting function of your word processing program to create your hanging indent.  

See Sample References Page (from APA Sample Student Paper):

Elements of Reference List Entries: (Chapter 9)

References generally have four elements, each of which has a corresponding question for you to answer:

• Author:   Who is responsible for this work? (9.7-9.12)
• Date:   When was this work published? (9.13-9.17)
• Title:   What is this work called? (9.18-9.22)
• Source:   Where can I retrieve this work? (9.23-9.37)

By using these four elements and answering these four questions, you should be able to create a citation for any type of source.

For complete information on all of these elements, checkout the APA Style website.

This infographic shows the first page of a journal article. The locations of the reference elements are highlighted with different colors and callouts, and the same colors are used in the reference list entry to show how the entry corresponds to the source.

To create your references, you'll simple look for these elements in your source and put them together in your reference list entry.

American Psychological Association.  Example of where to find reference information for a journal article  [Infographic]. APA Style Center. https://apastyle.apa.org/style-grammar-guidelines/references/basic-principles

Below you'll find two printable handouts showing APA citation examples. The first is an abbreviated list created by MJC Librarians. The second, which is more comprehensive, is from the APA Style website. Feel free to print these for your convenience or use the links to reference examples below:

• APA Citation Examples Created by MJC Librarians for you.
• Common References Examples (APA Handout) Printable handout from the American Psychological Association.
• APA Style Quick Reference Guide See how to format three typical types of references.
• Journal Article
• Magazine Article
• Newspaper Article
• Edited Book Chapter
• Webpage on a Website

Classroom or Intranet Sources

• Classroom Course Pack Materials
• How to Cite ChatGPT
• Dictionary Entry
• Government Report
• Legal References (Laws & Cases)
• TED Talk References
• Religious Works
• Open Educational Resources (OER)
• Archival Documents and Collections

You can view the entire Reference Examples website below and view a helpful guide to finding useful APA style topics easily:

• APA Style: Reference Examples
• Navigating the not-so-hidden treasures of the APA Style website
• Missing Reference Information

Sometimes you won't be able to find all the elements required for your reference. In that case, see the  instructions in Table 9.1 of the APA style manual in section 9.4 or the APA Style website below:

• Direct Quotation of Material Without Page Numbers

The DOI or URL is the final component of a reference list entry. Because so much scholarship is available and/or retrieved online, most reference list entries end with either a DOI or a URL.

• A  DOI  is a unique alphanumeric string that identifies content and provides a persistent link to its location on the internet. DOIs can be found in database records and the reference lists of published works.
• A  URL  specifies the location of digital information on the internet and can be found in the address bar of your internet browser. URLs in references should link directly to the cited work when possible.

When to Include DOIs and URLs:

• Include a DOI for all works that have a DOI, regardless of whether you used the online version or the print version.
• If an online work has both a DOI and a URL, include only the DOI.
• For works without DOIs from websites (not including academic research databases), provide a URL in the reference (as long as the URL will work for readers).
• For works without DOIs from most academic research databases, do not include a URL or database information in the reference because these works are widely available. The reference should be the same as the reference for a print version of the work.
• For works from databases that publish original, proprietary material available only in that database (such as the UpToDate database) or for works of limited circulation in databases (such as monographs in the ERIC database), include the name of the database or archive and the URL of the work. If the URL requires a login or is session-specific (meaning it will not resolve for readers), provide the URL of the database or archive home page or login page instead of the URL for the work. (See APA Section 9.30 for more information). 
• If the URL is no longer working or no longer provides readers access to the content you intend to cite, try to find an archived version using the Internet Archive , then use the archived URL. If there is no archived URL, do not use that resource.

Format of DOIs and URLs:

Your DOI should look like this: 

https://doi.org/10.1037/a0040251

Follow these guidelines from the APA Style website.

APA Style uses the  author–date citation system , in which a brief in-text citation points your reader to the full reference list entry at the end of your paper. The in-text citation appears within the body of the paper and briefly identifies the cited work by its author and date of publication. This method enables your reader to locate the corresponding entry in the alphabetical reference list at the end of your paper.

Each work you cite  must  appear in the reference list, and each work in the reference list must be cited in the text (or in a table, figure, footnote, or appendix) except for the following (See APA, 8.4):

• Personal communications (8.9)
• General mentions of entire websites, whole periodicals (8.22), and common software and apps (10.10) in the text do not require a citation or reference list entry.
• The source of an epigraph does not usually appear in the reference list (8.35)
• Quotations from your research participants do not need citations or reference list entries (8.36)
• References included in a statistical meta-analysis, which are marked with an asterisk in the reference list, may be cited in the text (or not) at the author’s discretion. This exception is relevant only to authors who are conducting a meta-analysis (9.52).

Formatting Your In-Text Citations

Parenthetical and Narrative Citations: ( See APA Section  8.11)

In APA style you use the author-date citation system for citing references within your paper. You incorporate these references using either a  parenthetical   or a  narrative  style.

Parenthetical Citations

• In parenthetical citations, the author name and publication date appear in parentheses, separated by a comma. (Jones, 2018)
• A parenthetical citation can appear within or at the end of a sentence.
• When the parenthetical citation is at the end of the sentence, put the period or other end punctuation after the closing parenthesis.
• If there is no author, use the first few words of the reference list entry, usually the "Title" of the source: ("Autism," 2008) See APA 8.14
• When quoting, always provide the author, year, and specific page citation or paragraph number for nonpaginated materials in the text (Santa Barbara, 2010, p. 243).  See APA 8.13
• For most citations, the parenthetical reference is placed BEFORE the punctuation: Magnesium can be effective in treating PMS (Haggerty, 2012).

Narrative Citations 

In narrative citations, the author name or title of your source appears within your text and the publication date appears in parentheses immediately after the author name. 

• Santa Barbara (2010) noted a decline in the approval of disciplinary spanking of 26 percentage points from 1968 to 1994.

In-Text Citation Checklist

• In-Text Citation Checklist Use this useful checklist from the American Psychological Association to ensure that you've created your in-text citations correctly.

In-Text Citations for Specific Types of Sources

Quotations from Research Participants

Personal Communications

Secondary Sources  

Use NoodleTools to Cite Your Sources  

NoodleTools can help you create your references and your in-text citations.

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APA Style (7th Edition) Citation Guide: Journal Articles

• Introduction
• Journal Articles
• Magazine/Newspaper Articles
• Books & Ebooks
• Government & Legal Documents
• Biblical Sources
• Secondary Sources
• Films/Videos/TV Shows
• How to Cite: Other
• Additional Help

Table of Contents

Journal article from library database with doi - one author, journal article from library database with doi - multiple authors, journal article from a website - one author.

Journal Article- No DOI

Note: All citations should be double spaced and have a hanging indent in a Reference List.

A "hanging indent" means that each subsequent line after the first line of your citation should be indented by 0.5 inches.

This Microsoft support page contains instructions about how to format a hanging indent in a paper.

• APA 7th. ed. Journal Article Reference Checklist

If an item has no author, start the citation with the article title.

When an article has one to twenty authors, all authors' names are cited in the References List entry. When an article has twenty-one or more authors list the first nineteen authors followed by three spaced ellipse points (. . .) , and then the last author's name. Rules are different for in-text citations; please see the examples provided.

Cite author names in the order in which they appear on the source, not in alphabetical order (the first author is usually the person who contributed the most work to the publication).

Italicize titles of journals, magazines and newspapers. Do not italicize or use quotation marks for the titles of articles.

Capitalize only the first letter of the first word of the article title. If there is a colon in the article title, also capitalize the first letter of the first word after the colon.

If an item has no date, use the short form n.d. where you would normally put the date.

Volume and Issue Numbers

Italicize volume numbers but not issue numbers.

Retrieval Dates

Most articles will not need these in the citation. Only use them for online articles from places where content may change often, like a free website or a wiki.

Page Numbers

If an article doesn't appear on continuous pages, list all the page numbers the article is on, separated by commas. For example (4, 6, 12-14)

Library Database

Do not include the name of a database for works obtained from most academic research databases (e.g. APA PsycInfo, CINAHL) because works in these resources are widely available. Exceptions are Cochrane Database of Systematic Reviews, ERIC, ProQuest Dissertations, and UpToDate.

Include the DOI (formatted as a URL: https://doi.org/...) if it is available. If you do not have a DOI, include a URL if the full text of the article is available online (not as part of a library database). If the full text is from a library database, do not include a DOI, URL, or database name.

In the Body of a Paper

Books, Journals, Reports, Webpages, etc.: When you refer to titles of a “stand-alone work,” as the APA calls them on their APA Style website, such as books, journals, reports, and webpages, you should italicize them. Capitalize words as you would for an article title in a reference, e.g., In the book Crying in H Mart: A memoir , author Michelle Zauner (2021) describes her biracial origin and its impact on her identity.

Article or Chapter: When you refer to the title of a part of a work, such as an article or a chapter, put quotation marks around the title and capitalize it as you would for a journal title in a reference, e.g., In the chapter “Where’s the Wine,” Zauner (2021) describes how she decided to become a musician.

The APA Sample Paper below has more information about formatting your paper.

• APA 7th ed. Sample Paper

Author's Last Name, First Initial. Second Initial if Given. (Year of Publication). Title of article: Subtitle if any. Name of Journal, Volume Number (Issue Number), first page number-last page number. https://doi.org/doi number

Smith, K. F. (2022). The public and private dialogue about the American family on television: A second look. Journal of Media Communication, 50 (4), 79-110. https://doi.org/10.1152/j.1460-2466.2000.tb02864.x

Note: The DOI number is formatted as a URL: https://doi.org/10.1152/j.1460-2466.2000.tb02864.xIf. 

In-Text Paraphrase:

(Author's Last Name, Year)

Example: (Smith, 2000)

In-Text Quote:

(Author's Last Name, Year, p. Page Number)

Example: (Smith, 2000, p. 80)

Author's Last Name, First Initial. Second Initial if Given., & Last Name of Second Author, First Initial. Second Initial if Given. (Year of Publication). Title of article: Subtitle if any. Name of Journal, Volume Number (Issue Number), first page number-last page number. https://doi.org/doi number

Note: Separate the authors' names by putting a comma between them. For the final author listed add an ampersand (&) after the comma and before the final author's last name.

Note: In the reference list invert all authors' names; give last names and initials for only up to and including 20 authors. When a source has 21 or more authors, include the first 19 authors’ names, then three ellipses (…), and add the last author’s name. Don't include an ampersand (&) between the ellipsis and final author.

Note : For works with three or more authors, the first in-text citation is shortened to include the first author's surname followed by "et al."

Reference List Examples

Two to 20 Authors

Case, T. A., Daristotle, Y. A., Hayek, S. L., Smith, R. R., & Raash, L. I. (2011). College students' social networking experiences on Facebook. Journal of Applied Developmental Psychology, 3 (2), 227-238. https://doi.org/10.1016/j.appdev.2008.12.010

21 or more authors

Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, J., Mo, K. C., Ropelewski, C., Wang, J., Leetma, A., . . . Joseph, D. (1996). The NCEP/NCAR 40-year reanalysis project. Bulletin of the American Meteorological Society , 77 (3), 437-471. https://doi.org/10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO;2

In-Text Citations

Two Authors/Editors

(Case & Daristotle, 2011)

Direct Quote: (Case & Daristotle, 2011, p. 57)

Three or more Authors/Editors

(Case et al., 2011)

Direct Quote: (Case et al., 2011, p. 57)

Author's Last Name, First Initial. Second Initial if Given. (Year of Publication). Title of article: Subtitle if any.  Name of Journal, Volume Number (Issue Number if given). URL

Flachs, A. (2010). Food for thought: The social impact of community gardens in the Greater Cleveland Area.  Electronic Green Journal, 1 (30). http://escholarship.org/uc/item/6bh7j4z4

Example: (Flachs, 2010)

Example: (Flachs, 2010, Conclusion section, para. 3)

Note: In this example there were no visible page numbers or paragraph numbers, in this case you can cite the section heading and the number of the paragraph in that section to identify where your quote came from. If there are no page or paragraph numbers and no marked section, leave this information out.

Journal Article - No DOI

Author's Last Name, First Initial. Second Initial if Given. (Year of Publication). Title of article: Subtitle if any.  Name of Journal, Volume Number (Issue Number), first page number-last page number. URL [if article is available online, not as part of a library database]

Full-Text Available Online (Not as Part of a Library Database):

Steinberg, M. P., & Lacoe, J. (2017). What do we know about school discipline reform? Assessing the alternatives to suspensions and expulsions.  Education Next, 17 (1), 44–52.  https://www.educationnext.org/what-do-we-know-about-school-discipline-reform-suspensions-expulsions/

Example: (Steinberg & Lacoe, 2017)

(Author's Last Name, Year, p. Page number)

Example: (Steinberg & Lacoe, 2017, p. 47)

Full-Text Available in Library Database:

Jungers, W. L. (2010). Biomechanics: Barefoot running strikes back.  Nature, 463 (2), 433-434.

Example: (Jungers, 2010)

Example: (Jungers, 2010, p. 433)

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How to Cite a Research Paper in APA

Last Updated: October 19, 2022 Fact Checked

This article was co-authored by wikiHow Staff . Our trained team of editors and researchers validate articles for accuracy and comprehensiveness. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. There are 12 references cited in this article, which can be found at the bottom of the page. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed 158,427 times. Learn more...

If you’re citing a research article or paper in APA style, you’ll need to use a specific citation format that varies depending on the source. Assess whether your source is an article or report published in an academic journal or book, or whether it is an unpublished research paper, such as a print-only thesis or dissertation. Either way, your in-text citations will need to include information about the author (if available) and the date when your source was published or written.

Sample Citations

Writing an In-Text Citation

• For example, you may write, “Gardener (2008) notes, ‘There are several factors to consider about lobsters’ (p. 199).”

• For example, you may write, “‘There are several factors to consider about lobsters’ (Gardner, 2008, p. 199).” Or, “The paper claims, ‘The fallen angel trope is common in religious and non-religious texts’ (Meek & Hill, 2015, p.13-14).”
• For articles with 3-5 authors, write out the names of all the authors the first time you cite the source. For example: (Hammett, Wooster, Smith, & Charles, 1928). In subsequent citations, write only the first author’s name, followed by et al.: (Hammett et al., 1928).
• If there are 6 or more authors for the paper, include the last name of the first author listed and then write "et al." to indicate that there are more than 5 authors.
• For example, you may write, "'This is a quote' (Minaj et al., 1997, p. 45)."

• For example, you may write, “‘The risk of cervical cancer in women is rising’ (American Cancer Society, 2012, p. 2).”

• For example, you may write, “‘Shakespeare may have been a woman’ (“Radical English Literature,” 2004, p. 45).” Or, “The paper notes, ‘There is a boom in Virgin Mary imagery’ (“Art History in Italy,” 2011, p. 32).”

• For example, you may write, “‘There are several factors to consider about lobsters’ (Gardner, 2008, p. 199).” Or, “The paper claims, ‘The fallen angel trope is common in religious and non-religious texts’ (“Iconography in Italian Frescos,” 2015, p.13-14).”

• For example, you may write, “‘There are several factors to consider about lobsters’ (Gardner, 2008, p. 199).” Or, “The paper claims, ‘The fallen angel trope is common in religious and non-religious texts’ (“Iconography in Italian Frescos,” 2015, p.145-146).”

• For example, you may write, “‘The effects of food deprivation are long-term’ (Mett, 2005, para. 18).”

Creating a Reference List Citation for a Published Source

• Material on websites is also considered “published,” even if it’s not peer-reviewed or associated with a formal publishing company.
• While academic dissertations or theses that are print-only are considered unpublished, these types of documents are considered published if they’re included in an online database (such as ProQuest) or incorporated into an institutional repository.

• For example, you may write, “Gardner, L. M.” Or, “Meek, P. Q., Kendrick, L. H., & Hill, R. W.”
• If there is no author, you can list the name of the organization that published the research paper. For example, you may write, “American Cancer Society” or “The Reading Room.”
• Formally published documents that don’t list an author or that have a corporate author are typically reports or white papers .

• For example, you may write, “Gardner, L. M. (2008).” Or, “American Cancer Society. (2015).”

• For example, you may write, “Gardner, L. M. (2008). Crustaceans: Research and data.” Or, “American Cancer Society. (2015). Cervical cancer rates in women ages 20-45.”

• For example, for a journal article, you may write, “Gardner, L. M. (2008). Crustaceans: Research and data. Modern Journal of Malacostracan Research, 25, 150-305.”
• For a book chapter, you could write: “Wooster, B. W. (1937). A comparative study of modern Dutch cow creamers. In T. E. Travers (Ed.), A Detailed History of Tea Serviceware (pp. 127-155). London: Wimble Press."

• For example, you may write, “Kotb, M. A., Kamal, A. M., Aldossary, N. M., & Bedewi, M. A. (2019). Effect of vitamin D replacement on depression in multiple sclerosis patients. Multiple Sclerosis and Related Disorders, 29, 111-117. Retrieved from PubMed, https://www.ncbi.nlm.nih.gov/pubmed/30708308.
• If you’re citing a paper or article that was published online but did not come from an academic journal or database, provide information about the author (if known), the date of publication (if available), and the website where you found the article. For example: “Hill, M. (n.d.). Egypt in the Ptolemaic Period. Retrieved from https://www.metmuseum.org/toah/hd/ptol/hd_ptol.htm”

Citing Unpublished Sources in Your Reference List

• Print-only dissertations or theses.
• Articles or book chapters that are in press or have been recently prepared or submitted for publication.
• Papers that have been rejected for publication or were never intended for publication (such as student research papers or unpublished conference papers).

• If the paper is currently being prepared for publication, include the author’s name, the year when the current draft was completed, and the title of the article in italics, followed by “Manuscript in preparation.” For example: Wooster, B. W. (1932). What the well-dressed man is wearing. Manuscript in preparation.
• If the paper has been submitted for publication, format the citation the same way as if it were in preparation, but instead follow the title with “Manuscript submitted for publication.” For example: Wooster, B. W. (1932). What the well-dressed man is wearing. Manuscript submitted for publication.
• If the paper has been accepted for publication but is not yet published, replace the date with “in press.” Do not italicize the paper title, but do include the title of the periodical or book in which it will be published and italicize that. For example: Wooster, B. W. (in press). What the well-dressed man is wearing. Milady’s Boudoir.

• If the paper was written for a conference but never published, your citation should look like this: Riker, W. T. (2019, March). Traditional methods for the preparation of spiny lobe-fish. Paper presented at the 325th Annual Intergalactic Culinary Conference, San Francisco, CA.
• For an unpublished paper written by a student for a class, include details about the institution where the paper was written. For example: Crusher, B. H. (2019). A typology of Cardassian skin diseases. Unpublished manuscript, Department of External Medicine, Starfleet Academy, San Francisco, CA.

• For example, you may write, “Pendlebottom, R. H. (2011). Iconography in Italian Frescos (Unpublished doctoral dissertation). New York University, New York, United States.”

Community Q&A

• If you want certain information to stand out in the research paper, then you can consider using a block quote. Thanks Helpful 0 Not Helpful 0

You Might Also Like

• ↑ https://libraryguides.vu.edu.au/apa-referencing/7JournalArticles
• ↑ https://owl.purdue.edu/owl/research_and_citation/apa_style/apa_formatting_and_style_guide/in_text_citations_author_authors.html
• ↑ https://bowvalleycollege.libguides.com/c.php?g=714519&p=5093747
• ↑ https://guides.libraries.psu.edu/apaquickguide/intext
• ↑ https://owl.purdue.edu/owl/research_and_citation/apa_style/apa_formatting_and_style_guide/in_text_citations_the_basics.html
• ↑ https://libguides.southernct.edu/c.php?g=7125&p=34582#1951239
• ↑ https://owl.purdue.edu/owl/research_and_citation/apa_style/apa_formatting_and_style_guide/reference_list_electronic_sources.html
• ↑ https://owl.purdue.edu/owl/research_and_citation/apa_style/apa_formatting_and_style_guide/reference_list_articles_in_periodicals.html
• ↑ https://owl.purdue.edu/owl/research_and_citation/apa_style/apa_formatting_and_style_guide/reference_list_books.html
• ↑ https://morlingcollege.libguides.com/apareferencing/unpublished-or-informally-published-work
• ↑ https://owl.purdue.edu/owl/research_and_citation/apa_style/apa_formatting_and_style_guide/general_apa_faqs.html
• ↑ https://owl.purdue.edu/owl/research_and_citation/apa_style/apa_formatting_and_style_guide/reference_list_other_print_sources.html

About This Article

To cite a research paper in-text in APA, name the author in the text to introduce the quote and put the publication date for the text in parentheses. At the end of your quote, put the page number in parentheses. If you don’t mention the author in your prose, include them in the citation. Start the citation, which should come at the end of the quote, by listing the author’s last name, the year of publication, and the page number. Make sure to put all of this information in parentheses. If there’s no author, use the name of the organization that published the paper or the first few words from the title. To learn how to cite published and unpublished sources in your reference list, keep reading! Did this summary help you? Yes No

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APA Style 7th Edition Tutorials for Students in Psychology and Social Work

• About APA Style 7th Edition
• Basics of APA Style Tutorial

In-Text Citations: Author-Date Citation System

Two formats of in-text citations: parenthetical or narrative.

• Reference Entry Elements
• Reference Examples
• Reference List
• Student Paper Format

More Guidelines for In-Text Citation

• In-Text Citation Checklist Use this useful checklist from APA Style to ensure that you've created your in-text citations correctly.
• Quotations This page addresses how to format short quotations and block quotations.
• Quotations From Research Participants How to cite the quotations from research participants in the text.
• Personal Communications Guidance for citing personal communications in the text.
• Secondary Sources Guidance for citing secondary sources in the text.
• Classroom or Intranet Sources Guidance for citing works from the classroom website or learning management system, e.g., Canvas.
• Paraphrasing When you paraphrase, cite the original work using either the narrative or parenthetical citation format.
• Plagiarism What specifically “counts” as plagiarism and self-plagiarism?

In scholarly writing, it is essential to acknowledge how others contributed to your work. Both paraphrases and quotations require citations. Follow the APA principles to create proper in-text citations.

APA Style uses the author–date citation system   to create an in-text citation, which appears within the body of the paper and briefly identifies the cited work by its author and date of publication. This in-text citation enables your reader to locate the corresponding entry in the alphabetical reference list at the end of your paper. Therefore, the in-text citation components include: a uthor, date, and page number of the quotation if there is a direct quote. 

• In an in-text citation, provide the surname(s) of the author(s) or the names(s) of the group author(s). Group author could be an organization.
• In an in-text citation, provide the date, which is only the year, The year as date component must match the date in the reference list entry. 
•  In an in-text citation, when quoting directly, always provide the page number of the quotation in the a uthor-date citation system .  

In-text citations may be parenthetical or narrative.

• In parenthetical citations, the author name and publication date appear in parentheses. Use an ampersand (&) between names for a work with two authors or before the last author when all names must be included to avoid ambiguity. e.g. The dangers of misinformation (Koehler, 2016) cannot be ignored. 
• In narrative citations, the author name is incorporated into the text as part of the sentences and the year follows in parentheses. Always spell out the word “and.” for a work with two authors. The date appears in parentheses immediately after the author name. e.g. Koehler (2016) noted the dangers of misinformation.

Number of authors to include in in-text citations The format of the author element of the in-text citation changes depending on the number of authors and is abbreviated in some cases.

• For a work with one or two authors, include the author name(s) in every citation.
• For a work with three or more authors, include the name of only the first author plus “et al.” in every citation (even the first citation).

The following table shows the basic in-text citation styles:

For more information, click on  Parenthetical versus Narrative In-Text Citations from official APA Style website.

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• Next: Reference Entry Elements >>
• Last Updated: Mar 24, 2024 9:49 PM
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APA Citation Style, 7th edition: Article or Chapter in an Edited Book

• General Style Guidelines
• One Author or Editor
• Two Authors or Editors
• Three to Five Authors or Editors

Article or Chapter in an Edited Book

• Article in a Reference Book
• Edition other than the First
• Translation
• Government Publication
• Journal Article with 1 Author
• Journal Article with 2 Authors
• Journal Article with 3–20 Authors
• Journal Article 21 or more Authors
• Magazine Article
• Newspaper Article
• Basic Web Page
• Web page from a University site
• Web Page with No Author
• Entry in a Reference Work
• Government Document
• Film and Television
• Youtube Video
• Audio Podcast
• Electronic Image
• Twitter/Instagram
• Lecture/PPT
• Conferences
• Secondary Sources
• Citation Support
• Avoiding Plagiarism
• Formatting Your Paper

About Citing Books

For each type of source in this guide, both the general form and an example will be provided.

The following format will be used:

In-Text Citation (Paraphrase) - entry that appears in the body of your paper when you express the ideas of a researcher or author using your own words.  For more tips on paraphrasing check out The OWL at Purdue .

In-Text Citation (Quotation) - entry that appears in the body of your paper after a direct quote.

References - entry that appears at the end of your paper.

Information on citing and several of the examples were drawn from the Publication Manual of the American Psychological Association (7th ed.).

Numbers in parentheses refer to specific pages in the manual.

Subject Guide

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Fundamentals of APA

American Psychological Association (APA) style includes  parenthetical in-text citations  and a  reference list . 

APA uses  parenthetical citations  as its form of in-text citation. Provide a parenthetical citation  before the period  directly following the information you are citing. These citations should correspond to a more detailed citation in the reference list but only need to specify a page number if directly quoting or borrowing from the source material. The essential elements for this in-text citation are the author's last name and the date for the specific publications. The last name may be omitted if the sentence states or makes clear the source material.

APA uses a  reference list ,  an alphabetized list of sources following the end of the book or paper,  for its complete list of sources referenced. This list should be titled "References" in bold and alphabetized by the first item in the citation, which, in most cases, is the author's last name. Each reference from this list must be cited in your paper and vice versa.

Basic Format

Author Last Name, Author First Initial. (Year of publication). Title . Publisher Name.

Print Articles

Author Last Name, Author First Initial, & Author Last Name, Author First Initial. (Year). Article Title. Periodical Title , volume number(issue number), pages.

Electronic Articles

Author Last Name, Author First Initial. (Year). Article Title. Periodical Title , volume number(issue number), pages. doi or static url.

Physical Images/Artwork

Artist Last Name, Artist First Initial. (Year). Artwork Title [medium]. Host Institution Name, City, State, Country. URL of institution.

Electronic Images/Artwork

Artist Last Name, Artist First Initial. (Year). Image Title [medium]. Source Title. URL of image.

In-text Citation Examples

Standard case :

"Lorem   ipsum  dolor sit  amet ,  consectetur   adipiscing   elit" (Last name, 2000, p.10).

If the author is not available , the title of the source may be used:

Lorem   ipsum  dolor sit  amet ,  consectetur   adipiscing   elit ("Source title", 2000, pp.10-11).

If multiple authors cited have the same last name , use the author's first initial along with their last name:

"Lorem   ipsum  dolor sit  amet ,  consectetur   adipiscing   elit" (E. Bronte, 1847, p.10).

Lorem   ipsum  dolor sit  amet ,  consectetur   adipiscing   elit (C. Bronte, 1847, p.10).

Full Citation Examples for the Reference List

Archival material :

Child, J. (1974).  Journal, 1974 . [Unpublished journal].  Papers of Julia Child, 1925-1993(MC 644, item 4).  Schlesinger Library on the History of Women in America, Radcliffe Institute,  https://id.lib.harvard.edu/ead/c/ sch00222c00006 /catalog .

Child, P. (1967). Julia Child at the White House [Photograph]. Schlesinger Library on the History of Women in America, Radcliffe Institute, https://id.lib.harvard.edu/images/olvwork539731/urn-3:RAD.SCHL:4510469/catalog.

Beck, S., Bertholle, L., & Child, J. (1961).  Mastering the art of French cooking.  Knopf.

Child, J. & Child, P. (1968).  The French chef cookbook . Alfred A. Knopf .

Journal article :

Muneal, M. (2011).  Studies in Popular Culture , 34(1), 152–154. www.jstor.org/stable/23416357.

Nussbaum, D. (2005). "In Julia Child's Kitchen, October 5 1998".  Gastronomica , 5(3), 29-38. doi: 10.1525/gfc.2005.5.3.29.

• APA Style website The online version of the APA Style Manual, this website offers to help with the technical elements of formatting in APA as well as writing and citing your work.
• Purdue OWL APA Guide The Purdue Online Writing Lab (OWL) is one of the most complete citation guides available online. The APA Guide explains how to format a paper in APA and breaks down citations by type with numerous examples.
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Learn how to write and cite in APA 7th, why we cite and the basics of citation which apply to other citation styles (e.g. MLA), too. APA citation is primarily used in the social sciences including business.  Click here to watch specific parts of this video.

Since 2000 there has been an effort to assign everything that exists in the digital world, e.g. online articles, with a unique number called a Digital Object Identifier or a DOI.  The DOI is unique, permanent, and persistent. It remains the same despite changes in URL's or permanent removal from the Internet.

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ChatGPT and similar tools are not credible sources of information; however, if your instructor allows other uses of AI applications in your course, you will still need to cite the output of those applications as you would any other source you use in your academic work. Citing the output of generative AI, for example large language models (LLMs) such as ChatGPT, is a unique challenge in that these applications are not "authors," and the output itself is irretrievable by others even when referenced. Therefore, you may need to provide additional documentation when submitting your work, for example, the full prompts you used to generate the output along with transcriptions or screenshots of the output. Style guides differ greatly on how and when to cite AI-generated content, so it's important to read the style guidelines for full details . Below are examples from the APA Style website for how to cite ChatGPT output specifically, but these examples should be applicable to any generative AI application.

• How to Cite ChatGPT (APA Style) Full explanation of how to cite generative AI in APA.

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Reference OpenAI. (2023). ChatGPT (Mar 14 version) [Large language model]. https://chat.openai.com/chat

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• Introduction
• Conclusions
• Article Information

The counts on the y-axis show per-period monthly totals by source type and are calculated from 11 sources reporting data. Only online vendors reporting counts are included; those for which counts were imputed using a bayesian imputation model are not shown. The Dobbs decision was formally announced on June 24, 2022, but data were excluded for May and June because the decision was leaked on May 2, 2022, leading to extreme volatility in requests for self-managed abortion.

eAppendix. Supplemental Methods

eReferences

Data Sharing Statement

• FDA in the Crosshairs of Science, Politics, and Abortion JAMA Viewpoint March 25, 2024 In this Viewpoint, the Supreme Court case FDA v AHM is used to illustrate the tension the FDA faces between science and politics, and state authority over abortion vs federal authority over which drugs may be marketed nationwide. Holly Fernandez Lynch, JD, MBE; Aaron S. Kesselheim, MD, JD, MPH
• Impacts of the Supreme Court Decision in FDA v Alliance for Hippocratic Medicine JAMA Viewpoint March 25, 2024 This Viewpoint outlines the potential effects of the Supreme Court case regarding mifepristone restrictions: a decision for the FDA would allow current dispensing, while ruling against the FDA would severely curtail access to reproductive health options. Eve Espey, MD, MPH; Tiffany Hailstorks, MD, MPH; Lisa Hofler, MD, MPH, MBA
• Advance Provision of Mifepristone and Misoprostol via Online Telemedicine in the US JAMA Internal Medicine Research Letter February 1, 2024 This cross-sectional study examines trends in the demand and characteristics and motivations of individuals who requested advance provision of abortion medications. Abigail R. A. Aiken, PhD; Jennifer E. Starling, PhD; Daniëlle C. van Blitterswijk, MSc; Carlijn Looijen, MSc; Thijs van Vliet, MSc; Dirk R. Essink, PhD; Rebecca Gomperts, PhD

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Aiken ARA , Wells ES , Gomperts R , Scott JG. Provision of Medications for Self-Managed Abortion Before and After the Dobbs v Jackson Women’s Health Organization Decision. JAMA. Published online March 25, 2024. doi:10.1001/jama.2024.4266

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Provision of Medications for Self-Managed Abortion Before and After the Dobbs v Jackson Women’s Health Organization Decision

• 1 LBJ School of Public Affairs, University of Texas at Austin
• 2 Plan C, National Women’s Health Network, Washington, DC
• 3 Aid Access, Amsterdam, the Netherlands
• 4 McCombs School of Business, University of Texas at Austin
• Viewpoint FDA in the Crosshairs of Science, Politics, and Abortion Holly Fernandez Lynch, JD, MBE; Aaron S. Kesselheim, MD, JD, MPH JAMA
• Viewpoint Impacts of the Supreme Court Decision in FDA v Alliance for Hippocratic Medicine Eve Espey, MD, MPH; Tiffany Hailstorks, MD, MPH; Lisa Hofler, MD, MPH, MBA JAMA
• Research Letter Advance Provision of Mifepristone and Misoprostol via Online Telemedicine in the US Abigail R. A. Aiken, PhD; Jennifer E. Starling, PhD; Daniëlle C. van Blitterswijk, MSc; Carlijn Looijen, MSc; Thijs van Vliet, MSc; Dirk R. Essink, PhD; Rebecca Gomperts, PhD JAMA Internal Medicine

Question   To what extent has the provision of medications for self-managed abortion outside the formal US health care setting increased in the 6 months following the Dobbs v Jackson Women’s Health Organization decision?

Findings   In this cross-sectional US-wide study, the total number of provisions of medications for self-managed abortion increased by an estimated 27 838 in the 6 months after Dobbs (July-December 2022) vs what would have been expected based on pre- Dobbs levels.

Meaning   Provision of medications for self-managed abortion in the US increased in the 6 months after Dobbs. A substantial number of people accessed abortion medications despite implementation of state-level bans and restrictions. Clinicians should be prepared to meet the needs of patients who may be considering self-managed medication abortion or who need or want to connect with the formal health care setting for postabortion care.

Importance   The Supreme Court decision in Dobbs v Jackson Women’s Health Organization overturned the right to choose abortion in the US, with at least 16 states subsequently implementing abortion bans or 6-week gestational limits. Prior research indicates that in the 6 months following Dobbs , approximately 32 360 fewer abortions were provided within the US formal health care setting. However, trends in the provision of medications for self-managed abortion outside the formal health care setting have not been studied.

Objective   To determine whether the provision of medications for self-managed abortion outside the formal health care setting increased in the 6 months after Dobbs .

Design, Setting, and Participants   Cross-sectional study using data from sources that provided abortion medications outside the formal health care setting to people in the US between March 1 and December 31, 2022, including online telemedicine organizations, community networks, and online vendors. Using a hierarchical bayesian model, we imputed missing values from sources not providing data. We estimated the change in provision of medications for self-managed abortion after the Dobbs decision. We then estimated actual use of these medications by accounting for the possibility that not all provided medications are used by recipients.

Exposure   Abortion restrictions following the Dobbs decision.

Main Outcomes and Measures   Provision and use of medications for a self-managed abortion.

Results   In the 6-month post- Dobbs period (July 1 to December 31, 2022), the total number of provisions of medications for self-managed abortion increased by 27 838 (95% credible interval [CrI], 26 374-29 175) vs what would have been expected based on pre- Dobbs levels. Excluding imputed data changes the results only slightly (27 145; 95% CrI, 25 747-28 246). Accounting for nonuse of medications, actual self-managed medication abortions increased by an estimated 26 055 (95% CrI, 24 739-27 245) vs what would have been expected had the Dobbs decision not occurred.

Conclusions and Relevance   Provision of medications for self-managed abortions increased in the 6 months following the Dobbs decision. Results suggest that a substantial number of abortion seekers accessed services despite the implementation of state-level bans and restrictions.

Since the US Supreme Court decision in Dobbs v Jackson Women’s Health Organization , 14 states have implemented total or near-total abortion bans and 2 have implemented 6-week bans. 1 These bans have greatly reduced access to abortion across large geographical areas, particularly in the southern US. 2 Although people may still travel to access care, this option is unaffordable or logistically impossible for many. 3 The immediate result was a decline in the number of abortions provided within the formal health care system: across all US states, an estimated 32 260 fewer such abortions took place in the 6 months after Dobbs (July-December 2022). 4

The objective of this study was to answer the natural follow-up question: Over that same 6-month post- Dobbs period, how many more people obtained abortion medications from sources outside the formal US health care system, and how many individuals subsequently used the medications to conduct a self-managed medication abortion? Self-management can include a spectrum of methods, including herbs, botanicals, and self-harm. 5 Increasingly, self-management involves the use of abortion medications, whether mifepristone and misoprostol together or misoprostol alone. 6 Before Dobbs , people in the US were already self-managing in this way, particularly in states where in-clinic abortions were heavily restricted. 7 Prior research has found increased demand for self-managed medication abortion in response to sudden policy changes, such as short-term bans on abortion under COVID-19 restrictions in 2020 and the implementation of a 6-week gestational limit on abortion in Texas in 2021. 8 , 9 Moreover, requests for self-managed medication abortion through the online telemedicine service Aid Access showed sharp increases immediately after Dobbs , especially in states with bans. 10 Yet beyond increased demand, little else is known about the number of provisions of medication for self-managed abortion in the wake of Dobbs .

This study directly addresses this gap in knowledge. By compiling data from as many known sources as possible, we counted how many provisions of medications for self-managed abortion took place during the 6 months immediately after Dobbs . We then adjusted this raw count in 2 ways: by subtracting what might reasonably have been expected based on the pre- Dobbs status quo and by accounting for the possibility that not all provided medications are used by their recipients.

We sought to obtain data from as many entities as possible that provided abortion medications outside the formal US health care setting between March 1 and December 31, 2022. To do so, we conducted a landscape review that encompassed internet searches; consultation with activists, advocacy organizations, and journalists; and information provided by Plan C, an organization that provides up-to-date information on how people in the US can access self-managed medication abortion. We identified 3 types of sources: (1) telemedicine organizations providing abortion medications with the involvement of non–US-based clinicians; (2) community networks providing abortion medications through volunteers; and (3) online vendors selling abortion medications. Each type of source uses a different model to provide medications for self-managed abortion. Telemedicine organizations typically involve a physician located outside the US who prescribes mifepristone and misoprostol. The recipient is asked to report relevant clinical history and donate approximately $100 to the service, with reduced donation amounts based on financial need. Medications are then mailed to the US from an overseas pharmacy. Instructions and support are provided by an online help desk. 7 Community networks typically involve medications sourced from pharmacies outside of the US, which may be mailed or hand delivered to recipients by a network of volunteers who also provide peer-to-peer support and information. Similar information and support may also be provided through hotlines. These services often provide medications at no cost to recipients. 11 Online vendors typically involve a website interface through which people can purchase abortion medications for between $39 and $470. Medications are then mailed to recipients from either within or outside the US, typically without integrated provision of information or support. 12

We asked all identified sources to share data on monthly provision volume (defined as the number of provisions of abortion medications) over 2 periods: March 1 to April 30, 2022 (baseline) and July 1 to December 31, 2022 (post- Dobbs ). For sources operating as umbrella organizations comprising multiple subsources (ie, online vendors operating multiple websites, community networks with multiple interconnected national and/or international branches), we ensured that data were aggregated across subsources in a coordinated fashion and that no duplicate reporting occurred. We asked sources that involved both US- and non–US-based clinicians, such as Aid Access, to exclude provisions by US-based physicians. During the study period, these provisions were limited to states with laws permitting telemedicine for medication abortion. We also asked sources that offer advance provision, ie, provisions of abortion medications for possible later use by people who are not pregnant, to exclude these provisions from their reported volumes. 13 We excluded May and June 2022 from the study period for 2 reasons: (1) the extreme volatility of demand between the leak of the Dobbs decision and its formal announcement 10 and (2) the fact that these months are not included in published estimates of abortions provided within the formal health care setting. 4 To respect requests for confidentiality, we aggregated counts at the level of source type rather than individual source.

For each source type, we counted the total number of provisions of abortion medications in each of the 6 months after the Dobbs decision. We then compared these observed monthly provisions with the 2 months of monthly provision counts in the pre- Dobbs data, which allows estimation of what might have been observed in a counterfactual scenario in which Dobbs had not occurred. This comparison is subject to uncertainty because the pre- Dobbs counts can provide only an estimate of what might have occurred in the absence of Dobbs . To account for this uncertainty, we made 2 key assumptions. First, we modeled the pre- Dobbs monthly counts using a negative-binomial distribution with a constant monthly mean specific to each source type. We fit this model in a bayesian framework using noninformative prior distributions, and we verified the fit of the model using posterior predictive checks. Second, we assumed that if Dobbs had not occurred, the post- Dobbs provision counts would have followed the same negative-binomial distribution that we used to model to the pre- Dobbs counts. Based on these 2 assumptions, we used our fitted model to repeatedly simulate counterfactual post- Dobbs counts from the posterior predictive distribution, and we subtracted these simulated counterfactual counts from the actual post- Dobbs counts. This gave us a posterior distribution over excess provisions: the difference between what was actually observed in July through December 2022 and what might have been observed over that same period had Dobbs not occurred. Full details of the model are in the eAppendix in Supplement 1 .

To estimate the change in actual self-managed medication abortions taking place after Dobbs , we multiplied excess provisions by an assumed usage rate, which represents the fraction of medications provided that are actually used by their recipients. We estimated the usage rates separately by source type using data from the sources in our dataset cross-referenced with published estimates. The telemedicine organizations in our dataset reported an average usage rate of 88% based on follow-up with their recipients. We cross-referenced this number with 5 independent published studies of self-managed medication abortion provided by telemedicine, which yielded very consistent estimates: 86%, 87% (2 studies), 88%, and 90%, 14 - 18 for an average of 88%. Similarly, we used the average of 4 recent articles on community networks, which had very consistent estimates of the usage rate, 97% and 99% (3 studies), 19 - 22 yielding an average of 98.5%. Although community networks in our dataset were unable to provide data on usage, the estimate of 99% is consistent with their best estimates. We could find no prior work on the usage rate of abortion medications sold by online vendors, and these sources were not able to supply data on usage. However, we judged that they are more similar to telemedicine services than they are to community network models. Therefore, we used the lowest available published usage rate from the 4 studies on telemedicine, yielding an assumed usage rate of 86% for online vendors.

Although we could not obtain provision volumes from a small number of online vendors identified in the landscape review, we did obtain Google Analytics data on outbound clicks to these vendors’ websites originating from Plan C’s website. 23 Crucially, we also had data for a set of online vendors that were “fully observed” in the sense that both monthly outbound clicks and monthly provision volumes were available. We therefore fit a hierarchical bayesian regression model to these vendors’ data, allowing formation of posterior distributions of missing values for vendors with observed clicks (x) but unobserved provision volumes (y). Results are reported herein both with and without these imputed values. Details of the imputation model are in the eAppendix in Supplement 1 .

Sources did not share any personal or potentially identifying data with the research team. The University of Texas Institutional Review Board approved the study. All data analysis was conducted using R version 4.3.1. 24 We followed the STROBE reporting guidelines for observational studies.

We identified 15 unique sources, encompassing 28 subsources, that provided medications for self-managed abortion and that operated between March 1 and December 31, 2022. To our knowledge, this sample includes most, if not all, active sources during the study period. Among the 15 unique sources, 11 shared data on monthly provision volumes, including all the telemedicine organizations and community networks included in the sample. Four of 11 unique online vendors did not share data; for these sources, we imputed counts using the bayesian regression model for provision volume (y), given outbounds clicks (x) to each vendor’s website.

The Figure shows reported monthly provisions, separately by source type, during the pre- Dobbs and post- Dobbs periods. Excluding imputed missing values, there was an average of 5931 counted provisions per month totaled across all source types reported during the 6-month post- Dobbs period; the pre- Dobbs average was 1407. During the post- Dobbs period, community networks accounted for 3054 provisions per month (51.4%); telemedicine organizations operating outside the formal health care setting, 2204 provisions per month (37.2%); and online vendors, 674 provisions per month (11.4%).

The Table shows the estimates for excess post- Dobbs provision volume derived from the bayesian model, separately by source type. Totals are presented both with and without the imputed data. Including imputed counts, we estimated that the 6-month post- Dobbs period saw an increase in provisions of 27 838 (95% credible interval [CrI], 26 374-29 175) compared with what our model would expect based on the pre- Dobbs data. Excluding imputed counts changes the estimate of excess provisions only slightly (27 145; 95% CrI, 25 747-28 246).

The Table also shows the estimated change in self-managed medication abortions after adjusting excess provisions to account for the estimated usage rates for each source type. Including imputed counts, we estimated a 6-month post- Dobbs increase in self-managed medication abortions of 26 055 (95% CrI, 24 739-27 245) vs what would have been expected from the pre- Dobbs baseline.

This study provides estimates of the change in provision of medications for self-managed abortion, as well as actual use of these medications, in response to the Dobbs decision and the subsequent implementation of state-level abortion bans. We estimated that 27 838 additional provisions of abortion medications and 26 055 additional self-managed medication abortions took place in the 6 months following Dobbs compared with what might have reasonably been expected under the status quo. The results are robust to the imputation of missing values.

Counting self-managed medication abortions poses many challenges. By definition, these abortions take place outside the formal health care setting and therefore create no formal administrative records. These events are also difficult to count in surveys: underreporting of abortion by survey respondents is a well-established issue, 25 one likely to be exacerbated by the private nature and potential legal risks of self-managed abortion. The method used in this study, whereby data were obtained directly from sources that provide abortion medications outside the formal health care setting, was specifically undertaken to circumvent these challenges.

It is possible that our estimate may undercount the true number of provisions of medications for self-managed abortion during the post- Dobbs period. Indeed, we expected this to be the case: while we have tried to be as comprehensive as possible, not all sources of abortion medication outside the formal health care setting could be included. Notably, the count does not include provisions by physical pharmacies in Mexico, where people can obtain misoprostol after crossing the US border, as well as provisions at community settings such as flea markets in border towns 26 and provisions by community home abortion providers. 27 We could find no published estimates of how common these practices are, but in the context of the entire US, most of which is far from the US-Mexico border, it seems unlikely that these pathways account for a large fraction of all provisions. Although we expected these facts to bias our estimate downward, it seems unlikely that we have drastically undercounted. Alternatively, it is possible that our estimate may overcount the true number of provisions of medications for self-managed abortion during the post- Dobbs period. Our data reflect the provision, but not necessarily the use, of abortion medications for self-management. Although the analysis corrected for this fact by using the best available published estimates of the usage rate, if these estimates of the usage rate are biased upward, then so too is the estimate of how many abortions took place. Studies of both self-managed and clinical abortion often include people to whom medications were provided but whose outcomes are unknown, and we can only estimate usage based on available data from people who provide follow-up information about medication receipt and use. However, additional contact with people initially considered lost to follow-up due to nonresponse yields similar usage estimates to those used in our analysis. 15

There are several limitations to this study. First, we were unable to cross-reference provisions across different sources, leaving open the possibility that distinct shipments from 2 or more sources were actually for the same person. However, while people may order abortion medications from multiple sources, this issue is at least partially mitigated by adjusting for a usage rate of less than 100%. Indeed, in the literature that characterizes usage rates, one of the main reasons people offer for not using provided medications is that they obtained an abortion from another source. 16 , 17 , 19 It also seems unlikely that multiple ordering would be common given that most source types require payment or a donation, and cost can represent a significant barrier for people to access even a single source of self-managed medication abortion. 28 Second, while sources that offer advance provision explicitly excluded these shipments from their reported volumes, 13 sources that do not ask about clinical history, namely online vendors, may have been unable to distinguish these provisions from provisions intended for immediate use.

Third, we were unable to verify data from all sources, since some do not keep formal records. Fourth, we were able to obtain only 2 months of pre- Dobbs data from most sources; however, the bayesian model naturally accounts for the uncertainty arising from the limited size of the dataset, which is reflected in the posterior summaries in the Table .

Our findings suggest that even though fewer people accessed abortion care within the formal health care setting in the 6 months after Dobbs, a substantial number were able to access abortion medications outside the formal health care setting, despite state-level bans and restrictions. While self-managed medication abortion has long been considered a marginal practice in US, our findings suggest that this approach has become mainstream. This phenomenon is consistent with trends observed globally: in countries where access to in-clinic abortion is banned or heavily restricted, people frequently self-manage instead. 29 Indeed, the types of community networks now serving the US originated from the model of accompaniment networks in Latin America, 30 and the online telemedicine services operating in the US are modeled on international organizations like Women on Web. 31 The public health implications of this shift are complex. Self-managed medication abortion provided using telemedicine and community network models is known to offer high rates of effectiveness and very low rates of serious adverse outcomes. 5 , 15 - 18 , 32 Many people find it not merely acceptable but actively preferable to clinical care. 33 However, in the face of abortion bans, those who self-manage may face legal risks 34 and/or experience difficulty accessing postabortion care within the formal health care setting, should they want or need it. 35

Self-managed medication abortion is not a familiar or feasible option for all. Accordingly, it is likely that a substantial number of people continued their pregnancies. 36 Indeed, data on birth counts for the first half of 2023 suggest an increase of approximately 2.3% in states with total abortion bans in place relative to states without such restrictions. 37 This increase in births in ban states coincides with an increase in abortions taking place within the formal health care setting in states without bans or severe restrictions. Although such abortions declined nationally during our study period, during the immediate aftermath of Dobbs , data gathered over subsequent months have indicated a rebound in formal health care setting abortions during 2023. 38 , 39 The fact that this increase is concentrated in states without bans suggests that it is likely the result of increased delivery of medication abortion via telehealth, which has expanded access by reducing financial and logistical burdens for many. While declines in formal health care setting abortions have persisted in states with bans, recent developments such as provision of medication abortion to people residing in these states under shield laws may reverse this trend. Further research is needed to determine the relative contributions of various service delivery models in restrictive states. In the meantime, self-managed medication abortion will likely remain a significant contributor to abortion access in the post- Roe US. Clinicians will need to be prepared to encounter patients who may be considering self-managed medication abortion or who need or want to connect with the formal health care setting for postabortion care.

Provision of medications for self-managed abortions increased in the 6 months following the Dobbs decision. Results suggest that a substantial number of abortion seekers accessed services despite the implementation of state-level bans and restrictions.

Corresponding Author: Abigail R. A. Aiken, PhD, LBJ School of Public Affairs, University of Texas at Austin, PO Box Y, Austin, TX 78712 ( [email protected] ).

Accepted for Publication: March 6, 2024.

Published Online: March 25, 2024. doi:10.1001/jama.2024.4266

Author Contributions: Dr Aiken had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.

Concept and design: Aiken, Scott.

Acquisition, analysis, or interpretation of data: All authors.

Drafting of the manuscript: Aiken.

Critical review of the manuscript for important intellectual content: All authors.

Statistical analysis: Scott.

Obtained funding: Aiken.

Conflict of Interest Disclosures: Dr Aiken reported receipt of honoraria from RAD: Resources for Abortion Delivery for presentation of research on self-managed abortion and from Mathematica Inc for consultation on a proposed policy evaluation project relating to abortion. Dr Gomperts reported being founder and director of Aid Access. No other disclosures were reported.

Funding/Support: Dr Aiken receives grant support from the Society of Family Planning (grant SFPRF12-MA1), the Kopcho Reproductive Freedom Fund, and the William and Flora Hewlett Foundation (grant 2023-02900-GRA) and infrastructure support from the National Institutes of Health (grant P2CHD042849).

Role of the Funder/Sponsor: The funders had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; or decision to submit the manuscript for publication.

Data Sharing Statement: See Supplement 2 .

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How to Cite a Website in APA Style | Format & Examples

Published on November 5, 2020 by Jack Caulfield . Revised on January 17, 2024.

APA website citations usually include the author, the publication date, the title of the page or article, the website name, and the URL. If there is no author, start the citation with the title of the article. If the page is likely to change over time, add a retrieval date.

If you are citing an online version of a print publication (e.g. a newspaper , magazine , or dictionary ), use the same format as you would for print, with a URL added at the end. Formats differ for online videos (e.g. TED Talks ), images , and dissertations .

Use the buttons below to explore the format, or use our free APA Citation Generator to automatically create citations.

Cite a website in APA Style now:

Table of contents, citing an entire website, how to cite online articles, websites with no author, websites with no date, how to cite from social media, frequently asked questions about apa style citations.

When you refer to a website in your text without quoting or paraphrasing from a specific part of it, you don’t need a formal citation. Instead, you can just include the URL in parentheses after the name of the site:

One of the most popular social media sites, Instagram (http://instagram.com), allows users to share images and videos.

For this kind of citation, you don’t need to include the website on the reference page . However, if you’re citing a specific page or article from a website, you will need a formal in-text citation and reference list entry.

Prevent plagiarism. Run a free check.

Various kinds of articles appear online, and how you cite them depends on where the article appears.

Online articles from newspapers, magazines, and blogs

Articles appearing in online versions of print publications (e.g. newspapers and magazines) are cited like their print versions, but with an added URL.

The same format is used for blog posts. Just include the blog name where you would usually put the name of the magazine or newspaper.

Articles from online-only news sites

For articles from news sites without print equivalents (e.g. BBC News, Reuters), italicize the name of the article and  not  the name of the site.

When a web page does not list an individual author, it can usually be attributed to an organization or government . If this results in the author name being identical to the site name, omit the site name, as in the example below.

If you can’t identify any author at all, replace the author name with the title of the page or article.

In the in-text citation , put the title in quotation marks if it is in plain text in the reference list, or in italics if it is in italics in the reference list. Note that title case is used for the title here, unlike in the reference list. Shorten the title to the first few words if necessary.

When a web page or article does not list a publication or revision date, replace the date with “n.d.” (“no date”) in all citations.

If an online source is likely to change over time, it is recommended to include the date on which you accessed it.

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As social media posts are usually untitled, use the first 20 words of the post, in italics, as a title. Also include any relevant information about the type of post and any multimedia aspects (e.g. videos, images, sound, links) in square brackets.

On some social media sites (such as Twitter ), users go by usernames instead of or in addition to their real names. Where the author’s real name is known, include it, along with their username in square brackets:

In some cases, you’ll want to cite a whole social media profile instead of a specific post. In these cases, include an access date, because a profile will obviously change over time:

When citing a webpage or online article , the APA in-text citation consists of the author’s last name and year of publication. For example: (Worland & Williams, 2015). Note that the author can also be an organization. For example: (American Psychological Association, 2019).

If you’re quoting you should also include a locator. Since web pages don’t have page numbers, you can use one of the following options:

• Paragraph number: (Smith, 2018, para. 15).
• Heading or section name: ( CDC, 2020, Flu Season section)
• Abbreviated heading:  ( CDC, 2020, “Key Facts” section)

When you quote or paraphrase a specific passage from a source, you need to indicate the location of the passage in your APA in-text citation . If there are no page numbers (e.g. when citing a website ) but the text is long, you can instead use section headings, paragraph numbers, or a combination of the two:

(Caulfield, 2019, Linking section, para. 1).

Section headings can be shortened if necessary. Kindle location numbers should not be used in ebook citations , as they are unreliable.

If you are referring to the source as a whole, it’s not necessary to include a page number or other marker.

When no individual author name is listed, but the source can clearly be attributed to a specific organization—e.g., a press release by a charity, a report by an agency, or a page from a company’s website—use the organization’s name as the author in the reference entry and APA in-text citations .

When no author at all can be determined—e.g. a collaboratively edited wiki or an online article published anonymously—use the title in place of the author. In the in-text citation, put the title in quotation marks if it appears in plain text in the reference list, and in italics if it appears in italics in the reference list. Shorten it if necessary.

APA Style usually does not require an access date. You never need to include one when citing journal articles , e-books , or other stable online sources.

However, if you are citing a website or online article that’s designed to change over time, it’s a good idea to include an access date. In this case, write it in the following format at the end of the reference: Retrieved October 19, 2020, from https://www.uva.nl/en/about-the-uva/about-the-university/about-the-university.html

Instead of the author’s name, include the first few words of the work’s title in the in-text citation. Enclose the title in double quotation marks when citing an article, web page or book chapter. Italicize the title of periodicals, books, and reports.

No publication date

If the publication date is unknown , use “n.d.” (no date) instead. For example: (Johnson, n.d.).

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Caulfield, J. (2024, January 17). How to Cite a Website in APA Style | Format & Examples. Scribbr. Retrieved March 25, 2024, from https://www.scribbr.com/apa-examples/website/

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There is unequivocal evidence that Earth is warming at an unprecedented rate. Human activity is the principal cause.

• While Earth’s climate has changed throughout its history , the current warming is happening at a rate not seen in the past 10,000 years.
• According to the Intergovernmental Panel on Climate Change ( IPCC ), "Since systematic scientific assessments began in the 1970s, the influence of human activity on the warming of the climate system has evolved from theory to established fact." 1
• Scientific information taken from natural sources (such as ice cores, rocks, and tree rings) and from modern equipment (like satellites and instruments) all show the signs of a changing climate.
• From global temperature rise to melting ice sheets, the evidence of a warming planet abounds.

The rate of change since the mid-20th century is unprecedented over millennia.

Earth's climate has changed throughout history. Just in the last 800,000 years, there have been eight cycles of ice ages and warmer periods, with the end of the last ice age about 11,700 years ago marking the beginning of the modern climate era — and of human civilization. Most of these climate changes are attributed to very small variations in Earth’s orbit that change the amount of solar energy our planet receives.

The current warming trend is different because it is clearly the result of human activities since the mid-1800s, and is proceeding at a rate not seen over many recent millennia. 1 It is undeniable that human activities have produced the atmospheric gases that have trapped more of the Sun’s energy in the Earth system. This extra energy has warmed the atmosphere, ocean, and land, and widespread and rapid changes in the atmosphere, ocean, cryosphere, and biosphere have occurred.

Earth-orbiting satellites and new technologies have helped scientists see the big picture, collecting many different types of information about our planet and its climate all over the world. These data, collected over many years, reveal the signs and patterns of a changing climate.

Scientists demonstrated the heat-trapping nature of carbon dioxide and other gases in the mid-19th century. 2 Many of the science instruments NASA uses to study our climate focus on how these gases affect the movement of infrared radiation through the atmosphere. From the measured impacts of increases in these gases, there is no question that increased greenhouse gas levels warm Earth in response.

Scientific evidence for warming of the climate system is unequivocal.

Intergovernmental Panel on Climate Change

Ice cores drawn from Greenland, Antarctica, and tropical mountain glaciers show that Earth’s climate responds to changes in greenhouse gas levels. Ancient evidence can also be found in tree rings, ocean sediments, coral reefs, and layers of sedimentary rocks. This ancient, or paleoclimate, evidence reveals that current warming is occurring roughly 10 times faster than the average rate of warming after an ice age. Carbon dioxide from human activities is increasing about 250 times faster than it did from natural sources after the last Ice Age. 3

The Evidence for Rapid Climate Change Is Compelling:

Global Temperature Is Rising

The planet's average surface temperature has risen about 2 degrees Fahrenheit (1 degrees Celsius) since the late 19th century, a change driven largely by increased carbon dioxide emissions into the atmosphere and other human activities. 4 Most of the warming occurred in the past 40 years, with the seven most recent years being the warmest. The years 2016 and 2020 are tied for the warmest year on record. 5 Image credit: Ashwin Kumar, Creative Commons Attribution-Share Alike 2.0 Generic.

The Ocean Is Getting Warmer

The ocean has absorbed much of this increased heat, with the top 100 meters (about 328 feet) of ocean showing warming of 0.67 degrees Fahrenheit (0.33 degrees Celsius) since 1969. 6 Earth stores 90% of the extra energy in the ocean. Image credit: Kelsey Roberts/USGS

The Ice Sheets Are Shrinking

The Greenland and Antarctic ice sheets have decreased in mass. Data from NASA's Gravity Recovery and Climate Experiment show Greenland lost an average of 279 billion tons of ice per year between 1993 and 2019, while Antarctica lost about 148 billion tons of ice per year. 7 Image: The Antarctic Peninsula, Credit: NASA

Glaciers Are Retreating

Glaciers are retreating almost everywhere around the world — including in the Alps, Himalayas, Andes, Rockies, Alaska, and Africa. 8 Image: Miles Glacier, Alaska Image credit: NASA

Snow Cover Is Decreasing

Satellite observations reveal that the amount of spring snow cover in the Northern Hemisphere has decreased over the past five decades and the snow is melting earlier. 9 Image credit: NASA/JPL-Caltech

Sea Level Is Rising

Global sea level rose about 8 inches (20 centimeters) in the last century. The rate in the last two decades, however, is nearly double that of the last century and accelerating slightly every year. 10 Image credit: U.S. Army Corps of Engineers Norfolk District

Arctic Sea Ice Is Declining

Both the extent and thickness of Arctic sea ice has declined rapidly over the last several decades. 11 Credit: NASA's Scientific Visualization Studio

Extreme Events Are Increasing in Frequency

The number of record high temperature events in the United States has been increasing, while the number of record low temperature events has been decreasing, since 1950. The U.S. has also witnessed increasing numbers of intense rainfall events. 12 Image credit: Régine Fabri,  CC BY-SA 4.0 , via Wikimedia Commons

Ocean Acidification Is Increasing

Since the beginning of the Industrial Revolution, the acidity of surface ocean waters has increased by about 30%. 13 , 14 This increase is due to humans emitting more carbon dioxide into the atmosphere and hence more being absorbed into the ocean. The ocean has absorbed between 20% and 30% of total anthropogenic carbon dioxide emissions in recent decades (7.2 to 10.8 billion metric tons per year). 1 5 , 16 Image credit: NOAA

1. IPCC Sixth Assessment Report, WGI, Technical Summary . B.D. Santer et.al., “A search for human influences on the thermal structure of the atmosphere.” Nature 382 (04 July 1996): 39-46. https://doi.org/10.1038/382039a0. Gabriele C. Hegerl et al., “Detecting Greenhouse-Gas-Induced Climate Change with an Optimal Fingerprint Method.” Journal of Climate 9 (October 1996): 2281-2306. https://doi.org/10.1175/1520-0442(1996)009<2281:DGGICC>2.0.CO;2. V. Ramaswamy, et al., “Anthropogenic and Natural Influences in the Evolution of Lower Stratospheric Cooling.” Science 311 (24 February 2006): 1138-1141. https://doi.org/10.1126/science.1122587. B.D. Santer et al., “Contributions of Anthropogenic and Natural Forcing to Recent Tropopause Height Changes.” Science 301 (25 July 2003): 479-483. https://doi.org/10.1126/science.1084123. T. Westerhold et al., "An astronomically dated record of Earth’s climate and its predictability over the last 66 million years." Science 369 (11 Sept. 2020): 1383-1387. https://doi.org/10.1126/science.1094123

2. In 1824, Joseph Fourier calculated that an Earth-sized planet, at our distance from the Sun, ought to be much colder. He suggested something in the atmosphere must be acting like an insulating blanket. In 1856, Eunice Foote discovered that blanket, showing that carbon dioxide and water vapor in Earth's atmosphere trap escaping infrared (heat) radiation. In the 1860s, physicist John Tyndall recognized Earth's natural greenhouse effect and suggested that slight changes in the atmospheric composition could bring about climatic variations. In 1896, a seminal paper by Swedish scientist Svante Arrhenius first predicted that changes in atmospheric carbon dioxide levels could substantially alter the surface temperature through the greenhouse effect. In 1938, Guy Callendar connected carbon dioxide increases in Earth’s atmosphere to global warming. In 1941, Milutin Milankovic linked ice ages to Earth’s orbital characteristics. Gilbert Plass formulated the Carbon Dioxide Theory of Climate Change in 1956.

3. IPCC Sixth Assessment Report, WG1, Chapter 2 Vostok ice core data; NOAA Mauna Loa CO2 record O. Gaffney, W. Steffen, "The Anthropocene Equation." The Anthropocene Review 4, issue 1 (April 2017): 53-61. https://doi.org/abs/10.1177/2053019616688022.

4. https://www.ncei.noaa.gov/monitoring https://crudata.uea.ac.uk/cru/data/temperature/ http://data.giss.nasa.gov/gistemp

5. https://www.giss.nasa.gov/research/news/20170118/

6. S. Levitus, J. Antonov, T. Boyer, O Baranova, H. Garcia, R. Locarnini, A. Mishonov, J. Reagan, D. Seidov, E. Yarosh, M. Zweng, " NCEI ocean heat content, temperature anomalies, salinity anomalies, thermosteric sea level anomalies, halosteric sea level anomalies, and total steric sea level anomalies from 1955 to present calculated from in situ oceanographic subsurface profile data (NCEI Accession 0164586), Version 4.4. (2017) NOAA National Centers for Environmental Information. https://www.nodc.noaa.gov/OC5/3M_HEAT_CONTENT/index3.html K. von Schuckmann, L. Cheng, L,. D. Palmer, J. Hansen, C. Tassone, V. Aich, S. Adusumilli, H. Beltrami, H., T. Boyer, F. Cuesta-Valero, D. Desbruyeres, C. Domingues, A. Garcia-Garcia, P. Gentine, J. Gilson, M. Gorfer, L. Haimberger, M. Ishii, M., G. Johnson, R. Killick, B. King, G. Kirchengast, N. Kolodziejczyk, J. Lyman, B. Marzeion, M. Mayer, M. Monier, D. Monselesan, S. Purkey, D. Roemmich, A. Schweiger, S. Seneviratne, A. Shepherd, D. Slater, A. Steiner, F. Straneo, M.L. Timmermans, S. Wijffels. "Heat stored in the Earth system: where does the energy go?" Earth System Science Data 12, Issue 3 (07 September 2020): 2013-2041. https://doi.org/10.5194/essd-12-2013-2020.

7. I. Velicogna, Yara Mohajerani, A. Geruo, F. Landerer, J. Mouginot, B. Noel, E. Rignot, T. Sutterly, M. van den Broeke, M. Wessem, D. Wiese, "Continuity of Ice Sheet Mass Loss in Greenland and Antarctica From the GRACE and GRACE Follow-On Missions." Geophysical Research Letters 47, Issue 8 (28 April 2020): e2020GL087291. https://doi.org/10.1029/2020GL087291.

8. National Snow and Ice Data Center World Glacier Monitoring Service

9. National Snow and Ice Data Center D.A. Robinson, D. K. Hall, and T. L. Mote, "MEaSUREs Northern Hemisphere Terrestrial Snow Cover Extent Daily 25km EASE-Grid 2.0, Version 1 (2017). Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/MEASURES/CRYOSPHERE/nsidc-0530.001 . http://nsidc.org/cryosphere/sotc/snow_extent.html Rutgers University Global Snow Lab. Data History

10. R.S. Nerem, B.D. Beckley, J. T. Fasullo, B.D. Hamlington, D. Masters, and G.T. Mitchum, "Climate-change–driven accelerated sea-level rise detected in the altimeter era." PNAS 15, no. 9 (12 Feb. 2018): 2022-2025. https://doi.org/10.1073/pnas.1717312115.

11. https://nsidc.org/cryosphere/sotc/sea_ice.html Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS, Zhang and Rothrock, 2003) http://psc.apl.washington.edu/research/projects/arctic-sea-ice-volume-anomaly/ http://psc.apl.uw.edu/research/projects/projections-of-an-ice-diminished-arctic-ocean/

12. USGCRP, 2017: Climate Science Special Report: Fourth National Climate Assessment, Volume I [Wuebbles, D.J., D.W. Fahey, K.A. Hibbard, D.J. Dokken, B.C. Stewart, and T.K. Maycock (eds.)]. U.S. Global Change Research Program, Washington, DC, USA, 470 pp, https://doi.org/10.7930/j0j964j6 .

13. http://www.pmel.noaa.gov/co2/story/What+is+Ocean+Acidification%3F

14. http://www.pmel.noaa.gov/co2/story/Ocean+Acidification

15. C.L. Sabine, et al., “The Oceanic Sink for Anthropogenic CO2.” Science 305 (16 July 2004): 367-371. https://doi.org/10.1126/science.1097403.

16. Special Report on the Ocean and Cryosphere in a Changing Climate , Technical Summary, Chapter TS.5, Changing Ocean, Marine Ecosystems, and Dependent Communities, Section 5.2.2.3. https://www.ipcc.ch/srocc/chapter/technical-summary/

Header image shows clouds imitating mountains as the sun sets after midnight as seen from Denali's backcountry Unit 13 on June 14, 2019. Credit: NPS/Emily Mesner Image credit in list of evidence: Ashwin Kumar, Creative Commons Attribution-Share Alike 2.0 Generic.

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In-Text Citations: The Basics

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APA (American Psychological Association) style is most commonly used to cite sources within the social sciences. This resource, revised according to the 6 th edition, second printing of the APA manual, offers examples for the general format of APA research papers, in-text citations, endnotes/footnotes, and the reference page. For more information, please consult the Publication Manual of the American Psychological Association , (6 th ed., 2 nd printing).

Note:  This page reflects APA 6, which is now out of date. It will remain online until 2021, but will not be updated. The equivalent APA 7 page can be found here .

Reference citations in text are covered on pages 169-179 of the Publication Manual. What follows are some general guidelines for referring to the works of others in your essay.

Note:  On pages 65-66, the Publication Manual suggests that authors of research papers should use the past tense or present perfect tense for signal phrases that occur in the literature review and procedure descriptions (for example, Jones (1998) found or Jones (1998) has found ...). Contexts other than traditionally-structured research writing may permit the simple present tense (for example, Jones (1998)  finds ).

APA citation basics

When using APA format, follow the author-date method of in-text citation. This means that the author's last name and the year of publication for the source should appear in the text, for example, (Jones, 1998), and a complete reference should appear in the reference list at the end of the paper.

If you are referring to an idea from another work but NOT directly quoting the material, or making reference to an entire book, article or other work, you only have to make reference to the author and year of publication and not the page number in your in-text reference. All sources that are cited in the text must appear in the reference list at the end of the paper.

In-text citation capitalization, quotes, and italics/underlining

• Always capitalize proper nouns, including author names and initials: D. Jones.

( Note: in your References list, only the first word of a title will be capitalized: Writing new media .)

• When capitalizing titles, capitalize both words in a hyphenated compound word: Natural-Born Cyborgs .
• Capitalize the first word after a dash or colon: "Defining Film Rhetoric: The Case of Hitchcock's Vertigo ."
• Italicize the titles of longer works such as books, edited collections, movies, television series, documentaries, or albums: The Closing of the American Mind ; The Wizard of Oz ; Friends .
• Put quotation marks around the titles of shorter works such as journal articles, articles from edited collections, television series episodes, and song titles: "Multimedia Narration: Constructing Possible Worlds;" "The One Where Chandler Can't Cry."

Short quotations

If you are directly quoting from a work, you will need to include the author, year of publication, and page number for the reference (preceded by "p."). Introduce the quotation with a signal phrase that includes the author's last name followed by the date of publication in parentheses.

According to Jones (1998), "Students often had difficulty using APA style, especially when it was their first time" (p. 199).

Jones (1998) found "students often had difficulty using APA style" (p. 199); what implications does this have for teachers?

If the author is not named in a signal phrase, place the author's last name, the year of publication, and the page number in parentheses after the quotation.

She stated, "Students often had difficulty using APA style" (Jones, 1998, p. 199), but she did not offer an explanation as to why.

Long quotations

Place direct quotations that are 40 words or longer in a free-standing block of typewritten lines and omit quotation marks. Start the quotation on a new line, indented 1/2 inch from the left margin, i.e., in the same place you would begin a new paragraph. Type the entire quotation on the new margin, and indent the first line of any subsequent paragraph within the quotation 1/2 inch from the new margin. Maintain double-spacing throughout. The parenthetical citation should come after the closing punctuation mark.

Students often had difficulty using APA style, especially when it was their first time citing sources. This difficulty could be attributed to the fact that many students failed to purchase a style manual or to ask their teacher for help. (p. 199)

Summary or paraphrase

If you are paraphrasing an idea from another work, you only have to make reference to the author and year of publication in your in-text reference, but APA guidelines encourage you to also provide the page number (although it is not required).

According to Jones (1998), APA style is a difficult citation format for first-time learners.

APA style is a difficult citation format for first-time learners (Jones, 1998, p. 199).