Παραπομπή APA

Gravetter, F. J., & Forzano, L. B. (2012). Research methods for the behavioral sciences /4e (4th ed.). Wadsworth.

Παραπομπή Chicago Style

Gravetter, Frederick J., και Lori-Ann B. Forzano. Research Methods for the Behavioral Sciences /4e. 4th ed. Australia ; Belmont, CA: Wadsworth, 2012.

Παραπομπή MLA

Gravetter, Frederick J., και Lori-Ann B. Forzano. Research Methods for the Behavioral Sciences /4e. 4th ed. Wadsworth, 2012.