Schonberger, R. (2008). Best practices in lean six sigma process improvement: A deeper look. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Schonberger, Richard. Best Practices in Lean Six Sigma Process Improvement: A Deeper Look. Hoboken, N.J.: John Wiley & Sons, 2008.
Lua MLA (9ú heag.)Schonberger, Richard. Best Practices in Lean Six Sigma Process Improvement: A Deeper Look. John Wiley & Sons, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.