Hilgard, E. R., & Bower, G. H. (1966). Theories of learning (3a. ed.). Appleton Century Crofts.
Chicago Style (17th ed.) ZitazioaHilgard, Ernest Ropiequet, eta Gordon H. Bower. Theories of Learning. 3a. ed. Nueva York: Appleton Century Crofts, 1966.
MLA (9th ed.) ZitazioaHilgard, Ernest Ropiequet, eta Gordon H. Bower. Theories of Learning. 3a. ed. Appleton Century Crofts, 1966.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.