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Dyfyniad Arddull ChicagoChaston, Ian. Customer-focused Marketing: Actions for Delivering Greater Internal and External Customer Satisfaction. London: Mcgraw-hill, 1993.
Dyfyniad MLAChaston, Ian. Customer-focused Marketing: Actions for Delivering Greater Internal and External Customer Satisfaction. Mcgraw-hill, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.