Cita APA (7a ed.)

Williams, J. W., & Stith, M. (1980). Middle childhood: Behavior and development (2nd ed.). Macmillan.

Cita Chicago Style (17a ed.)

Williams, Joyce Wolfgang, y Marjorie Stith. Middle Childhood: Behavior and Development. 2nd ed. New York: Macmillan, 1980.

Cita MLA (9a ed.)

Williams, Joyce Wolfgang, y Marjorie Stith. Middle Childhood: Behavior and Development. 2nd ed. Macmillan, 1980.