Mead, D. W. (1916). Contracts, specifications and engineering relations. McGraw HIll book co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMead, Daniel W. Contracts, Specifications and Engineering Relations. New York: McGraw HIll book co., 1916.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMead, Daniel W. Contracts, Specifications and Engineering Relations. McGraw HIll book co., 1916.
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