Gaya APA

Cozby, P, C. et al (2009). Methods in behavioral research (Ed. IX). Gorontalo: Lanskap Zaman,dan Pustaka Pelajar.

Gaya MLA

Cozby, Paul, C.. et al. "Methods in behavioral research". Ed. IX Gorontalo: Lanskap Zaman,dan Pustaka Pelajar, 2009. Text.