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Dyfyniad Arddull ChicagoThorpe, Edgar, and Showick Thorpe. The Pearson General Knowledge Manual 2010. Chandigarh: Pearson, 2010.
Dyfyniad MLAThorpe, Edgar, and Showick Thorpe. The Pearson General Knowledge Manual 2010. Pearson, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.