THE SIX SIGMA HANDBOOK by Thomas Pyzdek
The SIX SIGMA WAY by Peter Pande, Robert Neuman, Roland Cavanagh
THE SIX SIGMA REVOLUTION by George Eckes
THE TOYOTA WAY by Jeffrey Liker
SIX SIGMA by Mikel Harry, Richard Schroeder
LEAN THINKING by James Womack and Daniel Jones
LEAN SIX SIGMA by Michael George
INTRODUCTION to the PRACTICE of STATISTICS by Moore & McCabe
IMPLEMENTING SIX SIGMA by Forrest W. Breyfogle
DESIGN AND ANALYSIS OF EXPERIMENTS by Douglas Montgomery
INTRODUCTION TO STATISTICAL QUALITY CONTROL by Douglas Montgomery
RESPONSE SURFACE METHODOLOGY by Raymond Myers, Douglas Montgomery
Failure Mode and Effect Analysis by D.H. Stamatis
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