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Dyfyniad Arddull ChicagoChristians, Clifford G., Kim B. Rotzoll, and Mark Fackler. Media Ethics: Cases and Moral Reasoning. 2nd ed. New York: Longman, 1987.
Dyfyniad MLAChristians, Clifford G., et al. Media Ethics: Cases and Moral Reasoning. 2nd ed. Longman, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.