APA-referens (7:e uppl.)

Evans, J. R. (2005). An Introduction to SIX SIMA & Process Improvement. Cengage Learning.

Chicago-referens (17:e uppl.)

Evans, James R. An Introduction to SIX SIMA & Process Improvement. New Delhi: Cengage Learning, 2005.

MLA-referens (9:e uppl.)

Evans, James R. An Introduction to SIX SIMA & Process Improvement. Cengage Learning, 2005.