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Dyfyniad Arddull ChicagoPei, Mario Andrew, and Donat Ivanovsky. All About Language. Philadelphia: Lippincott, 1954.
Dyfyniad MLAPei, Mario Andrew, and Donat Ivanovsky. All About Language. Lippincott, 1954.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.