APA

Barnes J. G., . (2001). Secrets of customer relationship management: it's all about how you make them feel. New York: McGraw-Hill.

Chicago

Barnes James G, . 2001. Secrets of customer relationship management: it's all about how you make them feel. New York: McGraw-Hill.

Harvard

Barnes J. G., . (2001). Secrets of customer relationship management: it's all about how you make them feel. New York: McGraw-Hill.

MLA

Barnes James G, . Secrets of customer relationship management: it's all about how you make them feel. New York: McGraw-Hill. 2001.