Gupta, B. C., & Walker, H. F. (2007). Statistical quality control for the Six sigma green belt. ASQ Quality Press.
芝加哥风格引文Gupta, Bhisham C., 与 H. Fred Walker. Statistical Quality Control for the Six Sigma Green Belt. Milwaukee, Wisconsin: ASQ Quality Press, 2007.
MLA引文Gupta, Bhisham C., 与 H. Fred Walker. Statistical Quality Control for the Six Sigma Green Belt. ASQ Quality Press, 2007.
警告：这些引文格式不一定是100％准确.