SMITH, G. W. (1979). Engineering Economy Analysis Of Capital Expenditures Gerald W. Smith. The IOWA State University Pres.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSMITH, Gerald W. Engineering Economy Analysis Of Capital Expenditures Gerald W. Smith. The IOWA State University Pres, 1979.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSMITH, Gerald W. Engineering Economy Analysis Of Capital Expenditures Gerald W. Smith. The IOWA State University Pres, 1979.
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