APA استشهاد

Roberts-Phelps, G. (2004). Customer relationship management: How to turn a good business into a great one.

استشهاد بنمط شيكاغو

Roberts-Phelps, Graham. Customer Relationship Management: How to Turn a Good Business into a Great One. Viva Books Pvt. Ltd., New Delhi, 2004.

MLA استشهاد

Roberts-Phelps, Graham. Customer Relationship Management: How to Turn a Good Business into a Great One. 2004.