Gaya APA

Kerlinger, F, N. et al (2006). Asas-Asas Behavioral . Yogyakarta: Gadjah Mada University Press.

Gaya MLA

Kerlinger, Fred, N.. et al. "Asas-Asas Behavioral". Yogyakarta: Gadjah Mada University Press, 2006. Text.