Citazione Stile APA (7a Edizione)

Pyzdek, T., & Keller, P. A. (2018). The six sigma handbook (Fifth edition.). McGraw-Hill Education.

Citazione stile Chigago Style (17a edizione)

Pyzdek, Thomas, e Paul A. Keller. The Six Sigma Handbook. Fifth edition. New York: McGraw-Hill Education, 2018.

Citatione MLA (9a ed.)

Pyzdek, Thomas, e Paul A. Keller. The Six Sigma Handbook. Fifth edition. McGraw-Hill Education, 2018.