APA (7e ed.) Bronvermelding

Howell, D. C. (1999). Fundamental statistics for the behavioral sciences (4th ed.). Duxbury Press.

Chicago (17e ed.) Bronvermelding

Howell, David C. Fundamental Statistics for the Behavioral Sciences. 4th ed. Pacific Grove, California: Duxbury Press, 1999.

MLA (9e ed.) Bronvermelding

Howell, David C. Fundamental Statistics for the Behavioral Sciences. 4th ed. Duxbury Press, 1999.