APA Style

Gravetter, F, J., Forzano, L, B. (2012). Research Methods for Behavioral Sciences (5e). Stamford: Cengage Learning.

MLA Style

Gravetter, Frederick, J., Forzano, Lori-Ann, B.. "Research Methods for Behavioral Sciences". 5e Stamford: Cengage Learning, 2012. Ilmu Komunikasi.