CLARK, J. R. (1986). Using and understanding engineering service and construction contracts. Van Nostrand Reinhold.
Lua i Stíl Chicago (17ú heag.)CLARK, John R. Using and Understanding Engineering Service and Construction Contracts. New York: Van Nostrand Reinhold, 1986.
Lua MLA (9ú heag.)CLARK, John R. Using and Understanding Engineering Service and Construction Contracts. Van Nostrand Reinhold, 1986.
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