Cita APA (7a ed.)

Wolff, W. (1947). What is psychology: A basic survey. Grune & Stratton.

Cita Chicago Style (17a ed.)

Wolff, Werner. What Is Psychology: A Basic Survey. New York: Grune & Stratton, 1947.

Cita MLA (8a ed.)

Wolff, Werner. What Is Psychology: A Basic Survey. Grune & Stratton, 1947.