NDT-2
The Six Sigma Handbook, Revised and Expanded : The Complete Guide for Greenbelts, Blackbelts, and Managers at All Levels
The Six Sigma Way Team Fieldbook: An Implementation Guide for Process Improvement Teams
Power of Six Sigma
What Is Six Sigma?
Implementing Six Sigma: Smarter Solutions Using Statistical Methods, Second Edition
Six Sigma For Managers
Six Sigma for Everyone