When do I use et al in citing

"Et al." is typically used when citing sources with multiple authors in APA and MLA style. It is short for the Latin phrase "et alia," meaning "and others."

In APA style, "et al." is used when a source has three or more authors. For example, if you are citing a source with five authors, you would list the first author's name followed by "et al."

In MLA style, "et al." is used when a source has four or more authors. Similar to APA style, you would list the first author's name followed by "et al."

It is important to note that "et al." should only be used after the first mention of a source in a paper. The full list of authors should be included in the reference list at the end of the paper.