Gaya APA
ZIMBARDO, P, G., RUCH, F, L, 1. (1980).
Essentials of psychology and life (10th ed.).
Glenview, Illinois:
Scott, Foresman.
Gaya MLA
ZIMBARDO, Philip, G.., RUCH, Floyd, Leon, 1903.
"Essentials of psychology and life".
10th ed.
Glenview, Illinois:
Scott, Foresman,
1980.
Buku.