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Dyfyniad Arddull ChicagoKupperman, Karen Ordahl. The Atlantic in World History. New York: Oxford University Press, 2012.
Dyfyniad MLAKupperman, Karen Ordahl. The Atlantic in World History. New York: Oxford University Press, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.