Gordon, I. (1998). Relationship marketing: New strategies, techniques and technologies to win the customers you want and keep them forever. Wiley.
Παραπομπή σε μορφή Chicago (17η εκδ.)Gordon, Ian. Relationship Marketing: New Strategies, Techniques and Technologies to Win the Customers You Want and Keep Them Forever. Toronto: Wiley, 1998.
Παραπομπή σε μορφή MLA (9th εκδ.)Gordon, Ian. Relationship Marketing: New Strategies, Techniques and Technologies to Win the Customers You Want and Keep Them Forever. Wiley, 1998.
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