Ryan, Thomas P.
Statistical methods for quality improvement
John Wiley & Sons, 2011
 Buku Teks SO
Ryan, Thomas P.
Statistical methods for quality improvement
Wiley, 1989
 Buku Teks SO
Schrock, Edward M.
Quality control and statistical methods
Reinhold, 1961
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Cowden, Dudley J.
Statistical methods in quality control
Prentice-Hall, 1957
 Buku Teks SO
Evans, James Robert, 1950-
Statistical process control for quality improvement : a training guide to learning SPC
Prentice-Hall, 1991
 Buku Teks SO