| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Is Your Organization Customer-Focused?: Assessment Audit | 978-0-9624563-1-2 (0-9624563-1-4) | 1993 |
| Strategies for Building a Customer-Focused Organization | 978-0-9624563-2-9 (0-9624563-2-2) | 1993 |
| The Art of Giving Quality Service | 978-0-9624563-0-5 (0-9624563-0-6) | 1999 |