APA (7th ed.) Citation

Gygi, C., DeCarlo, N., & Williams, B. (2005). Six sigma for dummies. Wiley Pub..

Chicago Style (17th ed.) Citation

Gygi, Craig, Neil DeCarlo, and Bruce Williams. Six Sigma for Dummies. Hoboken: Wiley Pub., 2005.

MLA (9th ed.) Citation

Gygi, Craig, et al. Six Sigma for Dummies. Wiley Pub., 2005.