When you have two authors, it’s like a buddy cop movie. You always mention both names. In the parentheses, write last name and last name, separated by an “and.”
For example: (Smith and Jones 42). See? No comma before “and,” because we’re not listing a grocery bag—just two fine folks who did the research.
If you mention them in the sentence, say “Smith and Jones argue…” It’s friendly, conversational, and keeps your professor happy. You’re basically giving both authors a high-five.
