Liebert, R. M., & Sprafkin, J. (1988). The early window: Effects of television on children and youth (3rd ed.). Pergamon Press.
Citace podle Chicago (17th ed.)Liebert, Robert M., a Joyce Sprafkin. The Early Window: Effects of Television on Children and Youth. 3rd ed. New York: Pergamon Press, 1988.
Citace podle MLA (9th ed.)Liebert, Robert M., a Joyce Sprafkin. The Early Window: Effects of Television on Children and Youth. 3rd ed. Pergamon Press, 1988.
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