एपीए उद्धरण

Eckes, G. (2003). Six sigma for everyone. John Wiley.

शिकागो स्टाइल उद्धरण

Eckes, George. Six Sigma for Everyone. NJ: John Wiley, 2003.

एमएलए उद्धरण

Eckes, George. Six Sigma for Everyone. John Wiley, 2003.