APA (7th ed.) Citation
Gupta, B. C., & Walker, H. F. (2007). Statistical quality control for the Six sigma green belt. ASQ Quality Press.
Chicago Style (17th ed.) Citation
Gupta, Bhisham C., and H. Fred Walker. Statistical Quality Control for the Six Sigma Green Belt. Milwaukee, Wisconsin: ASQ Quality Press, 2007.
MLA (9th ed.) Citation
Gupta, Bhisham C., and H. Fred Walker. Statistical Quality Control for the Six Sigma Green Belt. ASQ Quality Press, 2007.
Warning: These citations may not always be 100% accurate.