Wheeler, D. J. (1986). Understanding statistical process control. Statistical Process Control.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWheeler, Donald J. Understanding Statistical Process Control. Knoxville, Tenn: Statistical Process Control, 1986.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWheeler, Donald J. Understanding Statistical Process Control. Statistical Process Control, 1986.
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