Resource Modeling Association. (1986). Natural Resource Modeling. Rocky Mountain Mathematics Consortium.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रResource Modeling Association. Natural Resource Modeling. Tempe, Ariz: Rocky Mountain Mathematics Consortium, 1986.
एमएलए (8वां संस्करण) प्रशस्ति पत्रResource Modeling Association. Natural Resource Modeling. Rocky Mountain Mathematics Consortium, 1986.
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