Answered By: Sophie Farrar Last Updated: Aug 27, 2018 Views: 5
Et al. means and others and there are times when you must use it in your in-text references (APA) or footnotes (Chicago).
For works by (or edited by) four to ten persons, all names are usually given in the bibliography. In a footnote, only the name of the first author is included, followed by et al. with no intervening comma. See the Referencing Guide for examples.
Use et al. when the work you are referencing has three of more authors - see the Referencing Guide for examples.