Phelps, G. R. (2008). Customer relationship management: How to turn a good business into a great one.
Styl ChicagoPhelps, Graham Roberts. Customer Relationship Management: How to Turn a Good Business into a Great One. Viva Books Pvt. Ltd., New Delhi, 2008.
Citace podle MLAPhelps, Graham Roberts. Customer Relationship Management: How to Turn a Good Business into a Great One. 2008.
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