Peelen, E. (2018). Customer Relationship Management. Pearson Education India Pvt. Ltd.
Cita Chicago (17th ed.)Peelen, Ed. Customer Relationship Management. New Delhi: Pearson Education India Pvt. Ltd, 2018.
Cita MLA (9th ed.)Peelen, Ed. Customer Relationship Management. Pearson Education India Pvt. Ltd, 2018.
Atenció: Aquestes cites poden no estar 100% correctes.