How to Cite Multiple Authors in APA (2, 3, or More)

Sources with multiple authors require careful attention to formatting rules that differ between in-text citations and reference list entries. APA 7th edition provides clear guidelines for 2 authors, 3 authors, and sources with many authors. This comprehensive guide covers all scenarios.

Quick Reference Guide

# of Authors	In-Text (First Mention)	In-Text (Later Mentions)	Reference List
2	(Author A & Author B, Year)	(Author A & Author B, Year)	Author A, F.I. & Author B, F.I. (Year)
3	(Author A, Author B, & Author C, Year)	(Author A et al., Year)	Author A, F.I., Author B, F.I., & Author C, F.I. (Year)
4+	(Author A et al., Year)	(Author A et al., Year)	List all authors with commas and &
20+	(Author 1 et al., Year)	(Author 1 et al., Year)	First 19 authors, …, Last author

Two Authors

Reference List Format

List both authors separated by an ampersand (&). Use the format Last name, First initial(s).

Anderson, R. J., & Martinez, C. D. (2023). Title of work. Publisher.
https://doi.org/10.1234/example

In-Text Citation (All Mentions)

Always use both author names for two-author sources in all in-text citations.

Paraphrase:

Research shows significant results (Anderson & Martinez, 2023).

Direct Quote:

"The findings are conclusive" (Anderson & Martinez, 2023, p. 45).

Examples with Two Authors

Journal Article

Reference:
Chen, L., & Rodriguez, M. (2023). Machine learning applications in healthcare.
*Journal of Medical Technology*, 45(3), 234-256. https://doi.org/10.1234/jmt.2023.001

In-text:
(Chen & Rodriguez, 2023)

Book

Reference:
Thompson, L. K., & Williams, S. R. (2023). *The future of climate policy*.
Oxford University Press.

In-text:
(Thompson & Williams, 2023)

Three Authors

Reference List Format

List all three authors separated by commas, with an ampersand (&) before the final author.

Anderson, R. J., Chen, L., & Martinez, C. D. (2023). Title of work. Publisher.

First In-Text Mention

Include all three authors with commas and ampersand before the final author.

(Anderson, Chen, & Martinez, 2023)

Subsequent In-Text Mentions

After the first mention, use only the first author’s last name followed by “et al.”

(Anderson et al., 2023)

Examples with Three Authors

Journal Article

Reference:
Wilson, S. R., Anderson, K. L., & Thompson, J. B. (2023). Renewable energy systems.
*Journal of Sustainable Technology*, 19(2), 78-95. https://doi.org/10.1234/jst.2023.005

In-text (first mention):
(Wilson, Anderson, & Thompson, 2023)

In-text (subsequent mentions):
(Wilson et al., 2023)

Book Chapter

Reference:
Davis, E. R., Patel, R. S., & Kumar, A. (2023). Sustainable agriculture practices.
In M. Garcia (Ed.), *Environmental management strategies* (pp. 145-167). Academic Press.

In-text (first mention):
(Davis, Patel, & Kumar, 2023)

In-text (subsequent mentions):
(Davis et al., 2023)

Four or More Authors

Reference List Format

List all authors separated by commas, with an ampersand (&) before the final author.

Anderson, R. J., Chen, L., Martinez, C. D., & Williams, K. T. (2023). Title of work.
Publisher.

In-Text Citation (All Mentions)

Use “et al.” from the first mention with four or more authors.

(Anderson et al., 2023)

Examples with Four or More Authors

Journal Article with 4 Authors

Reference:
Thompson, L. K., Wilson, S. R., Anderson, R. J., & Grant, M. P. (2023). Advanced
artificial intelligence systems. *AI Research Quarterly*, 32(1), 12-34.
https://doi.org/10.1234/air.2023.001

In-text:
(Thompson et al., 2023)

Book with 5 Authors

Reference:
Brown, J. P., Garcia, M., Johnson, R. B., Davis, E. R., & Patel, R. S. (2023).
*Global health initiatives and policy*. World Health Organization Press.

In-text:
(Brown et al., 2023)

Conference Paper with 4 Authors

Reference:
Martinez, C. D., Anderson, K. L., Chen, L., & Williams, K. T. (2023). Digital
transformation strategies. In S. Lee (Ed.), *Proceedings of the International
Technology Conference* (pp. 234-256). Springer. https://doi.org/10.1007/book.2023

In-text:
(Martinez et al., 2023)

Twenty or More Authors

Reference List Format

For sources with 20 or more authors, list the first 19 authors, then insert an ellipsis (…) and include the final author’s name.

Author1, A., Author2, B., Author3, C., Author4, D., Author5, E., Author6, F.,
Author7, G., Author8, H., Author9, I., Author10, J., Author11, K., Author12, L.,
Author13, M., Author14, N., Author15, O., Author16, P., Author17, Q., Author18, R.,
… FinalAuthor, Z. (2023). Title of article. *Journal Name*, 45(2), 100-120.
https://doi.org/10.1234/journal.2023.001

In-Text Citation

Use “et al.” after the first author’s name regardless of the total number of authors.

(Author1 et al., 2023)

Example with 20+ Authors

Reference:
Smith, J. A., Anderson, R. J., Brown, M. P., Chen, L., Davis, E. R., Evans, S. T.,
Garcia, M. J., Harris, K. L., Johnson, R. B., Kumar, A., Lewis, T. M., Martinez, C. D.,
Nelson, N. O., Oliver, O. P., Patterson, P. Q., Quinn, Q. R., Rivera, R. S., Scott, S. T.,
Taylor, T. U., … Wilson, W. V. (2023). Comprehensive study of climate change impacts.
*Global Climate Research*, 51(4), 345-378. https://doi.org/10.1234/gcr.2023.001

In-text:
(Smith et al., 2023)

No Author (Organization as Author)

When an organization is the author, use the organization name instead of individual authors.

Reference List Format

National Institute of Health. (2023). Title of report. U.S. Department of Health
and Human Services. https://www.nih.gov/reports

In-Text Citation

(National Institute of Health, 2023)

Unknown or Unnamed Authors

When the author is truly unknown or unattributed, begin the citation with the title of the work.

Reference List Format

Title of article. (2023). *Journal Name*, 45(2), 123-145. https://doi.org/10.1234/jn.2023.001

In-Text Citation

("Title of Article," 2023)

Editors as Authors

When citing an edited book or collection, use the editor names followed by (Ed.) or (Eds.).

Reference List Format

Anderson, R. J. (Ed.). (2023). *Title of edited book*. Publisher.

Davis, E. R., & Martinez, C. D. (Eds.). (2023). *Title of edited collection*. Academic Press.

In-Text Citation

(Anderson, 2023)
(Davis & Martinez, 2023)

Corporate/Institutional Authors

When a corporation or institution is the author, list it as the author with any relevant department.

Reference List Format

American Psychological Association. (2023). *Title of publication*. American
Psychological Association.

U.S. Department of Education. (2023). *Title of report*. Government Printing Office.

In-Text Citation

(American Psychological Association, 2023)
(U.S. Department of Education, 2023)

Author Formatting Rules

Last Name and Initials

Always use Last name, First initial(s) format:

✓ Correct: Anderson, R. J.
✗ Incorrect: Anderson, Robert James
✗ Incorrect: R. J. Anderson

Middle Initials

Include middle initials if provided in the source:

✓ Martinez, C. D. (with middle initial)
✓ Rodriguez, M. (without middle initial)

Author Names with Special Characters

Preserve special characters in names:

✓ García, M. J.
✓ O'Brien, K. L.
✓ von Braun, J.

Common Multiple Author Citation Errors

• Using et al. in the reference list - Never use et al. in reference lists; list all authors
• Forgetting the ampersand - Always use & before the last author in reference lists
• Inconsistent et al. usage - Use consistently after first mention for 3+ authors
• Incorrect ampersand placement - Use & only in reference lists and directly before the last author
• Wrong order of authors - Always list authors in the order they appear in the source
• Missing middle initials - Include if provided in the source
• Using commas inconsistently - Use commas to separate all authors; use & before final author
• Forgetting “et al.” in in-text citations - Use after first author for 3+ authors (except second mention of 2-author sources)
• Improper alphabetization - Alphabetize by first author’s last name in reference list

Quick Examples: In-Text vs. Reference List

Two Authors

In-text: (Anderson & Martinez, 2023)
Reference: Anderson, R. J., & Martinez, C. D. (2023). ...

Three Authors

In-text (first): (Anderson, Chen, & Martinez, 2023)
In-text (later): (Anderson et al., 2023)
Reference: Anderson, R. J., Chen, L., & Martinez, C. D. (2023). ...

Four Authors

In-text: (Anderson et al., 2023)
Reference: Anderson, R. J., Chen, L., Martinez, C. D., & Williams, K. T. (2023). ...

Using GenText to Generate Multiple Author Citations

Managing multiple author names, format variations, and proper use of “et al.” can be complex. GenText’s citation generator handles all author combinations automatically. Input the author names (in order), source details, and publication information, and GenText generates perfectly formatted citations for both in-text and reference list use.

Visit /tools/citation-generator/apa/ to generate multi-author citations in seconds.

Verification Checklist

Before submitting citations with multiple authors, verify:

• ✓ All authors are listed in correct order
• ✓ Authors use Last name, First initial format
• ✓ Ampersands (&) are used correctly in reference list (before final author)
• ✓ “et al.” is used appropriately in in-text citations
• ✓ Reference list includes ALL authors (or first 19 + final author if 20+)
• ✓ First in-text mention of 3-author source includes all names
• ✓ Subsequent in-text mentions of 3-author source use et al.
• ✓ No et al. appears in reference list entries
• ✓ Alphabetization is by first author’s last name
• ✓ Hanging indent is properly applied

Related Guides

• Complete APA 7th Edition Citation Guide
• APA In-Text Citation Guide
• How to Cite a Journal Article in APA 7th Edition
• How to Cite a Book in APA 7th Edition

Properly formatting citations with multiple authors is essential for academic integrity and clarity. By mastering these APA rules, you’ll ensure your citations are correct whether sources have 2, 3, or many more authors.