APA (7e ed.) Bronvermelding
Gupta, B. C., & Walker, H. F. (2007). Statistical quality control for the Six sigma green belt. ASQ Quality Press.
Chicago (17e ed.) Bronvermelding
Gupta, Bhisham C., en H. Fred Walker. Statistical Quality Control for the Six Sigma Green Belt. Milwaukee, Wisconsin: ASQ Quality Press, 2007.
MLA (9e ed.) Bronvermelding
Gupta, Bhisham C., en H. Fred Walker. Statistical Quality Control for the Six Sigma Green Belt. ASQ Quality Press, 2007.
Let op: Deze citaties zijn niet altijd 100% accuraat.