Durkin Dianne Michonski. (2005). Loyalty Advantage: Essential steps to energize your company, your customers, your brand. American Management Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Durkin Dianne Michonski. Loyalty Advantage: Essential Steps to Energize Your Company, Your Customers, Your Brand. NewYork: American Management Association, 2005.
Παραπομπή σε μορφή MLA (9th εκδ.)Durkin Dianne Michonski. Loyalty Advantage: Essential Steps to Energize Your Company, Your Customers, Your Brand. American Management Association, 2005.
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