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Dyfyniad Arddull ChicagoRoget's Thesaurus: Find the Right Word for Every Need. Florida: P.S.I. Associates, 1992.
Dyfyniad MLARoget's Thesaurus: Find the Right Word for Every Need. Florida: P.S.I. Associates, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.