Gaya APA

Evans, J, R., Lindsay, W, M. (2007). An Introduction to Six Sigma & Process Improvement Pengantar Six Sigma (1). Jakarta: Salemba Empat.

Gaya MLA

Evans, James, R., Lindsay, William, M.. "An Introduction to Six Sigma & Process Improvement Pengantar Six Sigma". 1 Jakarta: Salemba Empat, 2007. Text.