Mussen, P. H., Conger, J. J., & Kagan, J. (1979). Child development and personality (5th ed.). Harper & Row.

Mussen, Paul Henry, John Janeway Conger, and Jerome Kagan. Child Development and Personality. 5th ed. New York: Harper & Row, 1979.

Mussen, Paul Henry, et al. Child Development and Personality. 5th ed. Harper & Row, 1979.