APA (7e ed.) Bronvermelding

Gravetter, F. J., & Wallnau, L. B. (2013). Statistics for the behavioral sciences (9th ed.). Wadsworth Cengage Learning.

Chicago (17e ed.) Bronvermelding

Gravetter, Frederick J., en Larry B. Wallnau. Statistics for the Behavioral Sciences. 9th ed. Belmont, CA: Wadsworth Cengage Learning, 2013.

MLA (8e ed.) Bronvermelding

Gravetter, Frederick J., en Larry B. Wallnau. Statistics for the Behavioral Sciences. 9th ed. Wadsworth Cengage Learning, 2013.