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Dyfyniad Arddull ChicagoAdair, John. Effective Communication: The Most Important Management Skill of All. New rev. ed. London: Pan Books An Imprint of Pan MacMillan, 2009.
Dyfyniad MLAAdair, John. Effective Communication: The Most Important Management Skill of All. New rev. ed. Pan Books An Imprint of Pan MacMillan, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.