Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

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