APA-Zitierstil (7. Ausg.)

Keller, F. S., & Schoenfeld, W. N. (1950). Principles of psychology: A systematic text in the science of behavior. Appleton-Century-Crofts.

Chicago-Zitierstil (17. Ausg.)

Keller, Fred Simmons, und William N. Schoenfeld. Principles of Psychology: A Systematic Text in the Science of Behavior. New York, NY: Appleton-Century-Crofts, 1950.

MLA-Zitierstil (9. Ausg.)

Keller, Fred Simmons, und William N. Schoenfeld. Principles of Psychology: A Systematic Text in the Science of Behavior. Appleton-Century-Crofts, 1950.