Freyfogle, E. T. (2002). Property rights, the market, and environmental change in 20th century America. Environmental Law Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFreyfogle, Eric T. Property Rights, the Market, and Environmental Change in 20th Century America. Washington, D.C.: Environmental Law Institute, 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFreyfogle, Eric T. Property Rights, the Market, and Environmental Change in 20th Century America. Environmental Law Institute, 2002.
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