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Dyfyniad Arddull ChicagoGray, Clifford F.; Larson. Project Management. 6th ed. New Delhi: McGraw Hill Education, 2014.
Dyfyniad MLAGray, Clifford F.; Larson. Project Management. 6th ed. McGraw Hill Education, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.