APA (7th ed.) Citation

Hilgard, E. R., & Bower, G. H. (1966). Theories of learning (3rd ed.). Appleton-Century-Crofts.

Chicago Style (17th ed.) Citation

Hilgard, Ernest R., and Gordon H. Bower. Theories of Learning. 3rd ed. New York: Appleton-Century-Crofts, 1966.

MLA (8th ed.) Citation

Hilgard, Ernest R., and Gordon H. Bower. Theories of Learning. 3rd ed. Appleton-Century-Crofts, 1966.