Weddell, B. J. (2002). Conserving living natural resources: In the context of a changing world. Cambridge, U.K.,New York, NY: Cambridge University Press.
शिकागो स्टाइल उद्धरणWeddell, Bertie J. Conserving Living Natural Resources: In the Context of a Changing World. Cambridge, U.K.,New York, NY: Cambridge University Press, 2002.
एमएलए उद्धरणWeddell, Bertie J. Conserving Living Natural Resources: In the Context of a Changing World. Cambridge, U.K.,New York, NY: Cambridge University Press, 2002.
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