Cita APA (7a ed.)

Liebert, R. M., & Sprafkin, J. (1973). The early window: Effects of television on children and youth. Pergamon Press.

Cita Chicago Style (17a ed.)

Liebert, Robert M., y Joyce Sprafkin. The Early Window: Effects of Television on Children and Youth. New York [etc.]: Pergamon Press, 1973.

Cita MLA (9a ed.)

Liebert, Robert M., y Joyce Sprafkin. The Early Window: Effects of Television on Children and Youth. Pergamon Press, 1973.