Citace podle APA (7th ed.)
Roberts-Phelps, G. (2001). Customer relationship management: How to turn a good business into a great one! Hawksmere.
Citace podle Chicago (17th ed.)
Roberts-Phelps, Graham. Customer Relationship Management: How to Turn a Good Business into a Great One! London: Hawksmere, 2001.
Citace podle MLA (9th ed.)
Roberts-Phelps, Graham. Customer Relationship Management: How to Turn a Good Business into a Great One! Hawksmere, 2001.
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