| Design for Six Sigma | Brue, Greg | |
| Six Sigma Demystified | Keller, Paul A | |
| Leaning into Six Sigma | Wheat, Barbara | |
| The Six Sigma Handbook | Pyzdek, Thomas | |
| The Devil Colony: A Sigma Force Novel | ||
| The Seventh Plague CD: A Sigma Force Novel | ||
| Het Sigma Protocol | Robert Ludlum | Luitingh-Sijthoff |
| The Power of Six Sigma | Chowdhury, Subir | |
| Das Sigma-Protokoll | Ludlum, Robert | |
| Six Sigma für Dummies | GYGI, Craig | |
| Six Sigma for Medical Device Design | ||
| Crucible (Sigma Force Series) | ||
| Black Order: A Sigma Force novel | ||
| The Design for Six Sigma Memory Jogger | ||
| The Judas Strain: A Sigma Force Novel | ||
| The Judas Strain (Sigma Force 4) | ||
| An Introduction to Six Sigma and Process | ||
| The Secret of Sigma Seven (The Hardy Boys #110) | ||
| Six Sigma in Kreditinstituten | BUCHTA, Thomas | |
| The Six Sigma Leader | Pande, Peter S. |
