APA-referens (7:e uppl.)

Hull, C. L. (1943). Principles of behavior, an introduction to behavior theory. D. Appleton-Century Company, Incorporated.

Chicago-referens (17:e uppl.)

Hull, Clark Leonard. Principles of Behavior, an Introduction to Behavior Theory. New York ; London: D. Appleton-Century Company, Incorporated, 1943.

MLA-referens (8:e uppl.)

Hull, Clark Leonard. Principles of Behavior, an Introduction to Behavior Theory. D. Appleton-Century Company, Incorporated, 1943.