Cita APA (7th ed.)
Gupta, B. C., & Walker, H. F. (2007). Statistical quality control for the Six sigma green belt. ASQ Quality Press.
Cita Chicago (17th ed.)
Gupta, Bhisham C., i H. Fred Walker. Statistical Quality Control for the Six Sigma Green Belt. Milwaukee, Wisconsin: ASQ Quality Press, 2007.
Cita MLA (9th ed.)
Gupta, Bhisham C., i H. Fred Walker. Statistical Quality Control for the Six Sigma Green Belt. ASQ Quality Press, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.