| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Look Forward Beyond Lean And Six Sigma: A Self-Perpetuating Enterprise Improvement Method 1St Ed | 978-81-315-2251-6 (81-315-2251-2) | 2014 |
| Look Forward Beyond Lean and Six Sigma: A Self-perpetuating Enterprise Improvement Method | 978-1-932159-46-2 (1-932159-46-0) | 2005 |
R.D. · Robert D. · Robert T. Dirgo · Robert T Dirgo B.S. M.S. · Robert T., Dr. Dirgo