Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.