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Dyfyniad Arddull ChicagoWilliams, Mary Kay. Abortion: A Collision of Rights. Washington, D.C.: National Catholic News Service, 1972.
Dyfyniad MLAWilliams, Mary Kay. Abortion: A Collision of Rights. National Catholic News Service, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.