References
- Deming, W. E. (1986). Out of the Crisis. MIT Center for Advanced Engineering Studies, Cambridge, MA, pp. 334–335.
- Neave, H. R. (1990). The Deming Dimension. SPC Press, Knoxville, TN, p. 81.
- Nelson, L. S. (1999). “Notes on the Shewhart Control Chart”. Journal of Quality Technology 31, pp. 124–126.