Gordon, I. (1998). Relationship marketing: New strategies, techniques and technologies to win the customers you want and keep them forever. Wiley.
Chicago-Zitierstil (17. Ausg.)Gordon, Ian. Relationship Marketing: New Strategies, Techniques and Technologies to Win the Customers You Want and Keep Them Forever. Toronto ; New York ; Weinheim <<[u.a.]>>: Wiley, 1998.
MLA-Zitierstil (9. Ausg.)Gordon, Ian. Relationship Marketing: New Strategies, Techniques and Technologies to Win the Customers You Want and Keep Them Forever. Wiley, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.