Harf, J. E., & Harf, J. E. (1986). The Politics of global resources: Population, food, energy and environment. Duke University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarf, James E., और James E.;Trout Harf. The Politics of Global Resources: Population, Food, Energy and Environment. Duke University Press, 1986.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHarf, James E., और James E.;Trout Harf. The Politics of Global Resources: Population, Food, Energy and Environment. Duke University Press, 1986.
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