Peelen, E. (2018). Customer Relationship Management. Pearson Education India Pvt. Ltd.
Chicago-čujuhus (17. p.)Peelen, Ed. Customer Relationship Management. New Delhi: Pearson Education India Pvt. Ltd, 2018.
MLA-čujuhus (9. p.)Peelen, Ed. Customer Relationship Management. Pearson Education India Pvt. Ltd, 2018.
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