 Often, we need to cite books, reports or articles that have multiple authors. To do this in CDU Harvard style, we use the et al rule. Et al is Latin for and others, and allows us to cite three or more authors in text without having to name every author each time. So if our resource has three or more authors, we can use et al. When it comes to writing the reference list at the end of the assignment, include every author's name. To see more examples, go to the CDU Harvard referencing style guide.