Cita APA (7th ed.)
Kubiak, T. M., & Benbow, D. W. (2009). The certified six sigma black belt handbook (Second edition.). ASQ Quality Press.
Cita Chicago (17th ed.)
Kubiak, T. M., i Donald W. Benbow. The Certified Six Sigma Black Belt Handbook. Second edition. Milwaukee, Wisconsin: ASQ Quality Press, 2009.
Cita MLA (9th ed.)
Kubiak, T. M., i Donald W. Benbow. The Certified Six Sigma Black Belt Handbook. Second edition. ASQ Quality Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.