American Statistical Association. Section on Quality and Productivity. (1993). Proceedings of the Section on Quality and Productivity. The Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmerican Statistical Association. Section on Quality and Productivity. Proceedings of the Section on Quality and Productivity. Alexandria, Va: The Association, 1993.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAmerican Statistical Association. Section on Quality and Productivity. Proceedings of the Section on Quality and Productivity. The Association, 1993.
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