General Rules:
* First mention in text: List all authors.
* Subsequent mentions: Use the first author's last name followed by "et al." (meaning "and others").
Example:
* First mention: (Smith, Jones, & Brown, 2023)
* Subsequent mentions: (Smith et al., 2023)
Important Notes:
* Four or fewer authors: List all authors in the first citation.
* Five or more authors: Use the first author's last name followed by "et al." from the first citation onwards.
* Direct quotes: Always include all authors' last names and the year, even in subsequent citations.
Let me know if you'd like more examples or have any other questions about APA formatting!