Cita APA

Liebert, R. M., & Sprafkin, J. (1988). The early window: Effects of television on children and youth (3rd ed.). Pergamon Press.

Citación estilo Chicago

Liebert, Robert M., and Joyce Sprafkin. The Early Window: Effects of Television on Children and Youth. 3rd ed. New York: Pergamon Press, 1988.

Cita MLA

Liebert, Robert M., and Joyce Sprafkin. The Early Window: Effects of Television on Children and Youth. 3rd ed. Pergamon Press, 1988.