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Dyfyniad Arddull ChicagoFrancis, SRS. Premeir IAS General Studies. 3rd ed. New Delhi: Binny, 1983.
Dyfyniad MLAFrancis, SRS. Premeir IAS General Studies. 3rd ed. Binny, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.