Uekotter. The Turning Points of Environmental History. University of Pittsburgh Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUekotter. The Turning Points of Environmental History. University of Pittsburgh Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUekotter. The Turning Points of Environmental History. University of Pittsburgh Press.
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