APA-viite (7. p.)

Ellis, R. S. (1930). The psychology of individual differences. D. Appleton and Co.

Chicago-viite (17. p.)

Ellis, Robert Sidney. The Psychology of Individual Differences. New York: D. Appleton and Co, 1930.

MLA-viite (9. p.)

Ellis, Robert Sidney. The Psychology of Individual Differences. D. Appleton and Co, 1930.