APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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