Liebert, R. M., & Sprafkin, J. (1988). The early window: Effects of television on children and youth (3rd ed.). Pergamon Press.
Chicago-referens (17:e uppl.)Liebert, Robert M., och Joyce Sprafkin. The Early Window: Effects of Television on Children and Youth. 3rd ed. New York: Pergamon Press, 1988.
MLA-referens (9:e uppl.)Liebert, Robert M., och Joyce Sprafkin. The Early Window: Effects of Television on Children and Youth. 3rd ed. Pergamon Press, 1988.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.