Durkin Dianne Michonski. (2005). Loyalty Advantage: Essential steps to energize your company, your customers, your brand. American Management Association.
Cita Chicago (17th ed.)Durkin Dianne Michonski. Loyalty Advantage: Essential Steps to Energize Your Company, Your Customers, Your Brand. NewYork: American Management Association, 2005.
Cita MLA (9th ed.)Durkin Dianne Michonski. Loyalty Advantage: Essential Steps to Energize Your Company, Your Customers, Your Brand. American Management Association, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.