APA Citatie

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

Chicago Style citaat

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

MLA citatie

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