Gaya APA

R.Evans, J., M.Lindsay, W. (2007). An Introduction to Six Sigma dan Process Improvement Pengantar six Sigma . Jakarta: Penernbin Slemba Empat.

Gaya MLA

R.Evans, James., M.Lindsay, Wiliam. "An Introduction to Six Sigma dan Process Improvement Pengantar six Sigma". Jakarta: Penernbin Slemba Empat, 2007. Text.