Cita APA (7th ed.)

Bergeron, B. (2002). Essentials of CRM: A guide to customer relationship management. John Wiley & Sons.

Cita Chicago (17th ed.)

Bergeron, Bryan. Essentials of CRM: A Guide to Customer Relationship Management. New York: John Wiley & Sons, 2002.

Cita MLA (8th ed.)

Bergeron, Bryan. Essentials of CRM: A Guide to Customer Relationship Management. John Wiley & Sons, 2002.