Papalia, D. E., & Olds, S. W. (1995). Human development (Sixth edition.). McGraw-Hill.

Papalia, Diane E., and Sally Wendkos Olds. Human Development. Sixth edition. New York: McGraw-Hill, 1995.

Papalia, Diane E., and Sally Wendkos Olds. Human Development. Sixth edition. McGraw-Hill, 1995.