APA (7th ed.) Citation

Keller, P. A. (2004). Six sigma demystified: [a self-teaching guide ...]. McGraw-Hill.

Chicago Style (17th ed.) Citation

Keller, Paul Anton. Six Sigma Demystified: [a Self-teaching Guide ...]. New York u.a: McGraw-Hill, 2004.

MLA (9th ed.) Citation

Keller, Paul Anton. Six Sigma Demystified: [a Self-teaching Guide ...]. McGraw-Hill, 2004.