Gaya APA

m.pd, D, E, K. (1987). Research methods in the social sciences (Third Edition) (Ed. 3). New York: st. martin's press.

Gaya MLA

m.pd, Drs., Engkus, Kustadi,. "Research methods in the social sciences (Third Edition)". Ed. 3 New York: st. martin's press, 1987. Text.