एपीए उद्धरण

Evans, J. R. (2005). An introduction to six sigma & process improvement. Ohio: Thomson south-western.

शिकागो स्टाइल उद्धरण

Evans, James R. An Introduction to Six Sigma & Process Improvement. Ohio: Thomson south-western, 2005.

एमएलए उद्धरण

Evans, James R. An Introduction to Six Sigma & Process Improvement. Ohio: Thomson south-western, 2005.