APA-viite (7. p.)

Evans, J. (2007). An Introduction to six sigma and process improvement. Thomson Learning.

Chicago-viite (17. p.)

Evans, James. An Introduction to Six Sigma and Process Improvement. New Delhi: Thomson Learning, 2007.

MLA-viite (9. p.)

Evans, James. An Introduction to Six Sigma and Process Improvement. Thomson Learning, 2007.