APA (7th ed.) Citation

Keller, P. A. (2011). Six Sigma Demystified: Hard Stuff Made Easy (2nd Edition.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Keller, Paul A. Six Sigma Demystified: Hard Stuff Made Easy. 2nd Edition. U.S.A: McGraw-Hill, 2011.

MLA (8th ed.) Citation

Keller, Paul A. Six Sigma Demystified: Hard Stuff Made Easy. 2nd Edition. McGraw-Hill, 2011.