The APA style guide does not give us specific guidelines on setting out references to multivolume works. However, Purdue University gives the advice below.
Weiner (1973) states that...
OR
...(Weiner, 1973).
Last name, Initial(s). (Ed.). (Year). Title (volume numbers). Place: Publisher.
Example:
Wiener, P. (Ed.). (1973). Dictionary of the history of ideas (Vols. 1-4). New York: Scribner's.