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Dyfyniad Arddull ChicagoGupta, Vivek. Managing E-business. Hyderabad: ICFAIU University Press, 2003.
Dyfyniad MLAGupta, Vivek. Managing E-business. ICFAIU University Press, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.