Entrepreneur Press · McGraw-Hill
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Killer Customer Care | 978-1-891984-86-0 (1-891984-86-1) | 2003 |
| Net Profits | 978-1-891984-29-7 (1-891984-29-2) | 2001 |
| Sales Force Automation: Using the Latest Technology to Make Your Sales Force More Competitive | 978-0-07-011840-9 (0-07-011840-X) | 1994 |
G. C. · G. Colombo · G. W. · George-C · George Colombo · George W. · W.C.