Eckes, G. (2001). Making Six Sigma last: Managing the balance between cultural and technical change. Wiley.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEckes, George. Making Six Sigma Last: Managing the Balance Between Cultural and Technical Change. New York: Wiley, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEckes, George. Making Six Sigma Last: Managing the Balance Between Cultural and Technical Change. Wiley, 2001.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.