| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Six Principles of Service Excellence: A Proven Strategy for Driving World-Class Employee Performance and Elevating the Customer Experience from Average to Extraordinary | 978-1-42O8-563O-9 (1-42O8-563O-8) | 2005 |
G J · Gilbert J. · T. Gilbert · T.J.