APA (7e ed.) Bronvermelding

Gravetter, F. J., & Wallnau, L. B. (1999). Essentials of statistics for the behavioral sciences (3rd ed.). Brooks/Cole.

Chicago (17e ed.) Bronvermelding

Gravetter, Frederick J., en Larry B. Wallnau. Essentials of Statistics for the Behavioral Sciences. 3rd ed. Pacific Grove: Brooks/Cole, 1999.

MLA (9e ed.) Bronvermelding

Gravetter, Frederick J., en Larry B. Wallnau. Essentials of Statistics for the Behavioral Sciences. 3rd ed. Brooks/Cole, 1999.