Gaya APA
Kerlinger, F, N.
(1990).
Asas-Asas Penelitian Behavioral
.
Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
Kerlinger, Freed, N..
"Asas-Asas Penelitian Behavioral".
Yogyakarta:
Gadjah Mada University Press,
1990.
Text.