| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1999 | 978-0-9624563-0-5 | Mary S. Gober | The Art of Giving Quality Service |
| 1993 | 978-0-9624563-1-2 | '' | Is Your Organization Customer-Focused?: Assessment Audit |
| '' | 978-0-9624563-2-9 | '' | Strategies for Building a Customer-Focused Organization |