Gaya APA
GUNARSA, S, D., FELDMAN, R, S. (1992).
Elements of Psychology / Robert S. Feldman (Ed. International.).
New York:
McGraw-Hill.
Gaya MLA
GUNARSA, Singgih, D.., FELDMAN, Robert, S..
"Elements of Psychology / Robert S. Feldman".
Ed. International.
New York:
McGraw-Hill,
1992.
Text.