Winpenny, J. T. (1991). Values for the environment: A guide to economic appraisal. London, England: Overseas Development Institute.
Citación estilo ChicagoWinpenny, James T. Values for the Environment: A Guide to Economic Appraisal. London, England: Overseas Development Institute, 1991.
Cita MLAWinpenny, James T. Values for the Environment: A Guide to Economic Appraisal. London, England: Overseas Development Institute, 1991.
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