What are the guidelines for citing a source with more than three authors in APA format?

In APA style, when a source has four or more authors, you only cite the first author's surname followed by "et al." (meaning "and others") in the in-text citation, regardless of whether it's the first, subsequent, or parenthetical citation.

Example:

(Smith et al., 2023)

The full author list is provided only in the reference list entry.