References
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- Ford Manual . 1987 . Continuing Process Control and Process Capability Improvement , Dearborn, MI : Ford Motor Company .
- Messina , W. S. 1987 . Statistical Quality Control for Manufacturing Managers , New York : Wiley .
- Montgomery , D. C. 1985 . Introduction to Statistical Quality Control , New York : Wiley .
- Nelson , L. S. 1989 . Standardization of Shewhart control charts . Journal of Quality Technology , 21 : 287 – 289 .
- Soffer , S. B. 1981 . Transformed p charts for variable sample size . Journal of Quality Technology , 13 : 189 – 191 .