Παραπομπή APA

V.kumar & Werner J.reinartz. (2006). Customer relationship management: A database approach. John wiley and sons.

Παραπομπή Chicago Style

V.kumar και Werner J.reinartz. Customer Relationship Management: A Database Approach. USA: John wiley and sons, 2006.

Παραπομπή MLA

V.kumar και Werner J.reinartz. Customer Relationship Management: A Database Approach. John wiley and sons, 2006.