APA Style

Breyfogle, F, W. et al (2001). Managing Six Sigma: a Practical Guide to Understanding, Assesing, and Implementing the Strategy that Yields Bottom-Line Success . New York: John Wiley & Sons.

MLA Style

Breyfogle, Forrest, W.. et al. "Managing Six Sigma: a Practical Guide to Understanding, Assesing, and Implementing the Strategy that Yields Bottom-Line Success". New York: John Wiley & Sons, 2001. Manajemen.