Kubiak, T. M., & Benbow, D. W. (2017). The Certified Six Sigma Black Belt Handbook (2nd ed.). Pearson Education India Pvt. Ltd.
Čikaški stil citiranja (17. izdanje)Kubiak, T. M., i Donald W. Benbow. The Certified Six Sigma Black Belt Handbook. 2nd ed. New Delhi: Pearson Education India Pvt. Ltd, 2017.
MLA način citiranja (9. izdanje)Kubiak, T. M., i Donald W. Benbow. The Certified Six Sigma Black Belt Handbook. 2nd ed. Pearson Education India Pvt. Ltd, 2017.
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