Παραπομπή APA

Freeland, J. G. (2003). The ultimate CRM handbook: Strategies and concepts for building enduring customer loyalty and profitability. New York: McGraw-Hill.

Παραπομπή Chicago Style

Freeland, John G. The Ultimate CRM Handbook: Strategies and Concepts for Building Enduring Customer Loyalty and Profitability. New York: McGraw-Hill, 2003.

Παραπομπή MLA

Freeland, John G. The Ultimate CRM Handbook: Strategies and Concepts for Building Enduring Customer Loyalty and Profitability. New York: McGraw-Hill, 2003.

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