When you need a reference citation but nothing in the Publication Manual seems to fit, it helps to understand the generic template that all APA Style references follow. As discussed previously, the generic reference answers four interrogative questions: Who? When? What? and Where?
This post addresses the “who” or author element. Upcoming posts discuss the "when," "what," and "where" questions
This post, together with the three preceding ones linked to, does a lot to clarify the principles behind APA style.