APA Style

EVANS, J, R., LINDSAY, W, M. (2007). An Introduction to Six Sigma & Process Improvement; Pengantar Six Sigma . Jakarta: Salemba Empat.

MLA Style

EVANS, JAMES, R.., LINDSAY, WILLIAM, M.. "An Introduction to Six Sigma & Process Improvement; Pengantar Six Sigma". Jakarta: Salemba Empat, 2007. Text.