APA-viite (7. p.)

Welkowitz, J., & Ewen, R. B. ,. (1971). Introductory statistics for the behavioral sciences. Academic Press.

Chicago-viite (17. p.)

Welkowitz, Joan, ja Robert B. ,Cohen Ewen. Introductory Statistics for the Behavioral Sciences. New York: Academic Press, 1971.

MLA-viite (9. p.)

Welkowitz, Joan, ja Robert B. ,Cohen Ewen. Introductory Statistics for the Behavioral Sciences. Academic Press, 1971.