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Dyfyniad Arddull ChicagoKagan, Donald. Western Heritage Brief: Study Guide and Work Book. New Jersey: Prentice Hall, 1996.
Dyfyniad MLAKagan, Donald. Western Heritage Brief: Study Guide and Work Book. Prentice Hall, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.