| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Six Sigma Best Practices: A Guide to Business Process Excellence for Diverse Industries | 978-1-932159-58-5 (1-932159-58-4) | 2006 |
D D · D.K · D. Kumar · D. P. · D. PH. · Dhirendra Kumar · P.K. · P. Kumar · Ph.D. · Ph.D. Kumar