APA (7e ed.) Bronvermelding

Spencer, T. D., & Kass, N. (1970). Perspectives in child psychology: Research and review. McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Spencer, Thomas D., en Norman Kass. Perspectives in Child Psychology: Research and Review. New York: McGraw-Hill, 1970.

MLA (9e ed.) Bronvermelding

Spencer, Thomas D., en Norman Kass. Perspectives in Child Psychology: Research and Review. McGraw-Hill, 1970.