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Dyfyniad Arddull ChicagoOmahoney, Joe. Management Consultancy. 2nd ed. NewDelhi: Oxford, 2014.
Dyfyniad MLAOmahoney, Joe. Management Consultancy. 2nd ed. Oxford, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.