Hilgard, E. R., & Bower, G. H. (1966). Theories of learning (3a. ed.). Appleton Century Crofts.
Cita Chicago (17th ed.)Hilgard, Ernest Ropiequet, i Gordon H. Bower. Theories of Learning. 3a. ed. Nueva York: Appleton Century Crofts, 1966.
Cita MLA (9th ed.)Hilgard, Ernest Ropiequet, i Gordon H. Bower. Theories of Learning. 3a. ed. Appleton Century Crofts, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.