Plaster, G. A., & Alderman, J. D. (2006). Beyond Six Sigma: Profitable Growth through Customer Value Creation. John Wiley & Sons, Inc.

Plaster, Gary A., and Jerry D. Alderman. Beyond Six Sigma: Profitable Growth Through Customer Value Creation. New Jersey: John Wiley & Sons, Inc, 2006.

Plaster, Gary A., and Jerry D. Alderman. Beyond Six Sigma: Profitable Growth Through Customer Value Creation. John Wiley & Sons, Inc, 2006.