Παραπομπή APA

Hilgard, E. R., & Bower, G. H. (1977). Theories of learning (4th ed.). Prentice hall.

Παραπομπή Chicago Style

Hilgard, Ernest R., και Gorden H. Bower. Theories of Learning. 4th ed. New Delhi: Prentice hall, 1977.

Παραπομπή MLA

Hilgard, Ernest R., και Gorden H. Bower. Theories of Learning. 4th ed. Prentice hall, 1977.