Peelen, E. (2018). Customer Relationship Management. Pearson Education India Pvt. Ltd.
Citazione stile Chigago Style (17a edizione)Peelen, Ed. Customer Relationship Management. New Delhi: Pearson Education India Pvt. Ltd, 2018.
Citatione MLA (9a ed.)Peelen, Ed. Customer Relationship Management. Pearson Education India Pvt. Ltd, 2018.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.