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Dyfyniad Arddull ChicagoKumar.V and Reinartz,Werner J. Customer Relationship Management: A Database Approach. Delhi: Wiley India, 2006.
Dyfyniad MLAKumar.V and Reinartz,Werner J. Customer Relationship Management: A Database Approach. Wiley India, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.