Christopher, M. (1991). Relationship marketing: Bringing quality, customer service, and marketing together. Oxford; Boston: Butterworth-Heinemann.
Παραπομπή Chicago StyleChristopher, Martin. Relationship Marketing: Bringing Quality, Customer Service, and Marketing Together. Oxford; Boston: Butterworth-Heinemann, 1991.
Παραπομπή MLAChristopher, Martin. Relationship Marketing: Bringing Quality, Customer Service, and Marketing Together. Oxford; Boston: Butterworth-Heinemann, 1991.
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