Gaya APA
Bower, G, H., R., H.
(1981).
Theoris of learning
(
Ed.5)
.
New Jersey:
Prentice Hall.
Gaya MLA
Bower, Gordon, H.., R., Hilgard,Ernerst.
"Theoris of learning".
Ed.5
New Jersey:
Prentice Hall,
1981.
Buku Tercetak.