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Dyfyniad Arddull ChicagoO'Leary, Timothy J., and Linda I. O'Leary. Computing Today. Boston: McGraw-Hill, 2004.
Dyfyniad MLAO'Leary, Timothy J., and Linda I. O'Leary. Computing Today. McGraw-Hill, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.