Gaya APA

Kerlinger, F, N. et al (1993). Asas-Asas Penelitian Behavioral (3). Yogyakarta: Gadjah Mada University Press.

Gaya MLA

Kerlinger, Fred, N. et al. "Asas-Asas Penelitian Behavioral". 3 Yogyakarta: Gadjah Mada University Press, 1993. Text.