Rai, A. K. (2008). Customer relationship management: Concepts and cases. PHI Learning.
Čikaški stil citiranjaRai, Alok Kumar. Customer Relationship Management: Concepts and Cases. New Delhi: PHI Learning, 2008.
MLA način citiranjaRai, Alok Kumar. Customer Relationship Management: Concepts and Cases. PHI Learning, 2008.
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