Kubiak, T. M., & Benbow, D. W. (2017). The Certified Six Sigma Black Belt Handbook (2nd ed.). Pearson Education India Pvt. Ltd.
Citazione stile Chigago Style (17a edizione)Kubiak, T. M., e Donald W. Benbow. The Certified Six Sigma Black Belt Handbook. 2nd ed. New Delhi: Pearson Education India Pvt. Ltd, 2017.
Citatione MLA (9a ed.)Kubiak, T. M., e Donald W. Benbow. The Certified Six Sigma Black Belt Handbook. 2nd ed. Pearson Education India Pvt. Ltd, 2017.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.