CLARK, J. R. (1986). Using and understanding engineering service and construction contracts. Van Nostrand Reinhold.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCLARK, John R. Using and Understanding Engineering Service and Construction Contracts. New York: Van Nostrand Reinhold, 1986.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCLARK, John R. Using and Understanding Engineering Service and Construction Contracts. Van Nostrand Reinhold, 1986.
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