Smith, I. G. (1973). The measurement of productivity: A systems approach in the context of productivity agreements. Gower Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSmith, Ian G. The Measurement of Productivity: A Systems Approach in the Context of Productivity Agreements. [Epping, Eng.]: Gower Press, 1973.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSmith, Ian G. The Measurement of Productivity: A Systems Approach in the Context of Productivity Agreements. Gower Press, 1973.
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