RIGGS, H. E. (1994). Financial And Cost Analysis For Engineering And Technology Management Henry E. Riggs. John Wiley & Sons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRIGGS, Henry E. Financial And Cost Analysis For Engineering And Technology Management Henry E. Riggs. John Wiley & Sons, 1994.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRIGGS, Henry E. Financial And Cost Analysis For Engineering And Technology Management Henry E. Riggs. John Wiley & Sons, 1994.
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