APA (7th ed.) Citation

Zinkgraf. (2006). Six Sigma- the first 90 days. Prentice Hall.

Chicago Style (17th ed.) Citation

Zinkgraf. Six Sigma- the First 90 Days. Upper Saddle River, N.J: Prentice Hall, 2006.

MLA (8th ed.) Citation

Zinkgraf. Six Sigma- the First 90 Days. Prentice Hall, 2006.