APA (7th ed.) Zitazioa
Kubiak, T. M., & Benbow, D. W. (2009). The certified six sigma black belt handbook (Second edition.). ASQ Quality Press.
Chicago Style (17th ed.) Zitazioa
Kubiak, T. M., eta Donald W. Benbow. The Certified Six Sigma Black Belt Handbook. Second edition. Milwaukee, Wisconsin: ASQ Quality Press, 2009.
MLA (9th ed.) Zitazioa
Kubiak, T. M., eta Donald W. Benbow. The Certified Six Sigma Black Belt Handbook. Second edition. ASQ Quality Press, 2009.
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