Drewin, F. (1982). Construction Productivity: Measurement And Improvement Through Work Study / F.j. Drewin. Elsevier.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDrewin, F.J. Construction Productivity: Measurement And Improvement Through Work Study / F.j. Drewin. Elsevier, 1982.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDrewin, F.J. Construction Productivity: Measurement And Improvement Through Work Study / F.j. Drewin. Elsevier, 1982.
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