APA
Kumar V. &. R. W. J., . (2006). Customer relationship management. John Wiley & Sons, Inc., New Jersey: .
Chicago
Kumar V & Reinartz Werner J, . 2006. Customer relationship management. John Wiley & Sons, Inc., New Jersey: .
Harvard
Kumar V. &. R. W. J., . (2006). Customer relationship management. John Wiley & Sons, Inc., New Jersey: .
MLA
Kumar V & Reinartz Werner J, . Customer relationship management. John Wiley & Sons, Inc., New Jersey: . 2006.