Liebert, R. M., & Sprafkin, J. (1988). The early window: Effects of television on children and youth (3rd ed.). Pergamon Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLiebert, Robert M., और Joyce Sprafkin. The Early Window: Effects of Television on Children and Youth. 3rd ed. New York: Pergamon Press, 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLiebert, Robert M., और Joyce Sprafkin. The Early Window: Effects of Television on Children and Youth. 3rd ed. Pergamon Press, 1988.
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