Gaya APA
Babbie, E.
(1986).
THE PRATICE OF SOCIAL RESEARCH
(
EDISI 1 CET 1)
.
usa:
BOOKSTORE.
Gaya MLA
Babbie, Earl.
"THE PRATICE OF SOCIAL RESEARCH".
EDISI 1 CET 1
usa:
BOOKSTORE,
1986.
Text.