APA 7th Edition In-Text Citation Rules: When to Use "et al."
💡 APA 7 Author-Count Quick Reference Table
| Author Count | Parenthetical In-Text | Narrative In-Text |
|---|---|---|
| 1 Author | (Adams, 2024) | Adams (2024) |
| 2 Authors | (Adams & Baker, 2024) | Adams and Baker (2024) |
| 3 or More Authors | (Adams et al., 2024) | Adams et al. (2024) |
Key Rule: In APA 7th edition, any work with 3+ authors uses 'et al.' on the very first mention.
1. The Critical Difference Between APA 6 and APA 7
The transition from APA 6th to APA 7th edition simplified in-text citations dramatically. In APA 6, authors were burdened with a confusing rule:
- If a paper had 3, 4, or 5 authors, you had to write out every author's surname on the first citation.
- You could only shorten to et al. on the second and subsequent citations.
APA 7 eliminated this rule entirely. Today, for any work with 3 or more authors, you truncate immediately to the first author's surname followed by et al. from the very first sentence. This saves page space and prevents awkward in-text paragraphs.
2. Typography and Punctuation of 'et al.'
The Latin phrase et al. stands for et alii ("and others"). Pay close attention to these three non-negotiable punctuation rules:
- No Italics: Write
et al.in regular font. Never italicize it in APA 7. - Period After 'al.' Only: "Et" is a complete word; "al." is an abbreviation. Never write
et. al.oret alwithout a period. - Comma Placement:
- Parenthetical:
(Taylor et al., 2024)→ Comma after the period. - Narrative:
Taylor et al. (2024) observed that...→ No comma after 'et al.' before the year.
- Parenthetical:
3. The Disambiguation Exception (Same First Author & Year)
What happens when you cite two different papers published in the same year that share the same first author and would otherwise abbreviate to the exact same citation? For example:
- Study 1: Taylor, Martinez, Wilson, and Green (2023)
- Study 2: Taylor, Martinez, Evans, and Cooper (2023)
Shortening both to (Taylor et al., 2023) would create an ambiguous citation where readers cannot tell which study is being cited.
APA 7 Solution: List as many authors as necessary to distinguish the two references, and then add et al.:
Citation for Study 1: (Taylor, Martinez, Wilson, et al., 2023)
Citation for Study 2: (Taylor, Martinez, Evans, et al., 2023)
4. Reference List Rules: How Many Authors to Include?
While the in-text citation is aggressively shortened, the References list at the end of your manuscript has a much higher threshold:
| Author Count in Reference | APA 7 Formatting Rule |
|---|---|
| 1 to 20 Authors | List all authors by surname and initials. Include an ampersand (&) before the final author. |
| 21 or More Authors | List the first 19 authors, insert an ellipsis (...) without an ampersand, and add the final author's name. |
Example with 21+ Authors:
Wiskunde, T. W., Verstappen, P. A., Chen, J., Hamilton, L., Leclerc, C., Norris, L., Russell, G., Piastri, O., Alonso, F., Stroll, L., Gasly, P., Ocon, E., Albon, A., Colapinto, F., Tsunoda, Y., Lawson, L., Bottas, V., Zhou, G., Magnussen, K., . . . Hulkenberg, N. (2024). Aerodynamic ground effect modeling in engineering. Journal of Fluid Mechanics, 980, Article A12. https://doi.org/10.1017/jfm.2024.123