Buttle, F. (2009). Customer relationship management: Concepts and technologies (2nd ed.). Routledge.
Chicago Style aipamenaButtle, Francis. Customer Relationship Management: Concepts and Technologies. 2nd ed. New York: Routledge, 2009.
MLA aipamenaButtle, Francis. Customer Relationship Management: Concepts and Technologies. 2nd ed. Routledge, 2009.
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