Mittlefehldt, S., & Cronon, W. (2013). Tangled roots: The Appalachian Trail and American environmental politics. University of Washington Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMittlefehldt, Sarah, और William Cronon. Tangled Roots: The Appalachian Trail and American Environmental Politics. Seattle: University of Washington Press, 2013.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMittlefehldt, Sarah, और William Cronon. Tangled Roots: The Appalachian Trail and American Environmental Politics. University of Washington Press, 2013.
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