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Dyfyniad Arddull ChicagoRao, S.L. Successful Negotiation: Strategies and Tactles for Mutual Gain. New Delhi: Wheeler publishing, 1994.
Dyfyniad MLARao, S.L. Successful Negotiation: Strategies and Tactles for Mutual Gain. Wheeler publishing, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.