Zinkgraf, S. A. (2006). Six sigma: The first 90 days. Upper Saddle River, NJ: Prentice Hall.
Chicago Style CitationZinkgraf, Stephen A. Six Sigma: The First 90 Days. Upper Saddle River, NJ: Prentice Hall, 2006.
MLA CitationZinkgraf, Stephen A. Six Sigma: The First 90 Days. Upper Saddle River, NJ: Prentice Hall, 2006.
Warning: These citations may not always be 100% accurate.