APA (7th ed.) Citation

Williams, B., DeCarlo, N., & Covey, S. R. (2012). Six Sigma for dummies (2nd ed.). Wiley.

Chicago Style (17th ed.) Citation

Williams, Bruce, Neil DeCarlo, and Stephen R. Covey. Six Sigma for Dummies. 2nd ed. Hoboken, NJ: Wiley, 2012.

MLA (9th ed.) Citation

Williams, Bruce, et al. Six Sigma for Dummies. 2nd ed. Wiley, 2012.