Answered By: Arts & Sciences / Philosophy & Theology Liaison Librarian
Last Updated: Jul 13, 2020     Views: 75

Et al. means and others and there are times when you must use it in your in-text references (APA) or footnotes (Chicago).

Chicago Style:

For works by four to ten persons, in a footnote, only the name of the first author is included, followed by et al. with no intervening comma. 

APA 7th Style:

For works by three or more persons, give the name of the first named author only followed by "et al." for in-text citations. 

APA 6th Style:

For works by three to five persons, include all names in the first in-text citation. For subsequent citations give the name of the first named author only followed by "et al." 

For works by six or more persons give the name of the first named author only followed by "et al." for in-text citations. 

There are multiple examples in the Referencing Guides - see the Author section in both the Journals and Books pages.