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Dyfyniad Arddull ChicagoBoyd, Don, Emmy Terry, and Sue Trinidad. Curtin University: CG10-1541. Australia. Office for Learning and Teaching, 2013.
Dyfyniad MLABoyd, Don, et al. Curtin University: CG10-1541. Australia. Office for Learning and Teaching, 2013.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.