Humphreys, D. (2008). Logjam: Deforestation and the crisis of global governance. Earthscan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHumphreys, David. Logjam: Deforestation and the Crisis of Global Governance. Earthscan, 2008.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHumphreys, David. Logjam: Deforestation and the Crisis of Global Governance. Earthscan, 2008.
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