APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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