Liebert, R. M., Sprafkin, J. N., & Davidson, E. S. (1982). The early window: Effects of television on children and youth (2nd ed.). Pergamon.
Παραπομπή σε μορφή Chicago (17η εκδ.)Liebert, Robert M., Joyce N. Sprafkin, και Emily S. Davidson. The Early Window: Effects of Television on Children and Youth. 2nd ed. New York: Pergamon, 1982.
Παραπομπή σε μορφή MLA (9th εκδ.)Liebert, Robert M., et al. The Early Window: Effects of Television on Children and Youth. 2nd ed. Pergamon, 1982.
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