Παραπομπή APA

Chaplin, J. P., & Krawiec, T. (1979). Systems and theories of psychology.

Παραπομπή Chicago Style

Chaplin, James P., και T.S Krawiec. Systems and Theories of Psychology. 1979.

Παραπομπή MLA

Chaplin, James P., και T.S Krawiec. Systems and Theories of Psychology. 1979.