Gaya APA
BOWER, G, H., Hilgard, E, R. (1981).
Theories of Learning (Ed. 5, Cet.10).
USA:
Prentice Hall International.
Gaya MLA
BOWER, Gordon, H.., Hilgard, Ernest, R..
"Theories of Learning".
Ed. 5, Cet.10
USA:
Prentice Hall International,
1981.
Text.