Adams, W. (1997). Future nature: A vision for conservation. Earthscan Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAdams, W.M. Future Nature: A Vision for Conservation. London: Earthscan Publications, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAdams, W.M. Future Nature: A Vision for Conservation. Earthscan Publications, 1997.
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