Brue, G., & Launsby. (2003). Design for Six Sigma. McGraw-Hill.
Dyfyniad Arddull ChicagoBrue, Greg, and Launsby. Design for Six Sigma. New York: McGraw-Hill, 2003.
Dyfyniad MLABrue, Greg, and Launsby. Design for Six Sigma. McGraw-Hill, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.