APA-referens (7:e uppl.)

Chaplin, J. P., & Krawiec, T. S. (1960). Systems and theories of psychology (2nd ed.). Holt, Rinehart and Winston.

Chicago-referens (17:e uppl.)

Chaplin, James Patrick, och Theophile Stanley Krawiec. Systems and Theories of Psychology. 2nd ed. New York: Holt, Rinehart and Winston, 1960.

MLA-referens (9:e uppl.)

Chaplin, James Patrick, och Theophile Stanley Krawiec. Systems and Theories of Psychology. 2nd ed. Holt, Rinehart and Winston, 1960.