Papalia, D. E., & Olds, S. W. (1993). A child's world: Infancy through adolescence (6th ed.). McGraw-Hill.

Papalia, Diane E., and Sally Wendkos Olds. A Child's World: Infancy Through Adolescence. 6th ed. New York: McGraw-Hill, 1993.

Papalia, Diane E., and Sally Wendkos Olds. A Child's World: Infancy Through Adolescence. 6th ed. McGraw-Hill, 1993.