APA (7e ed.) Bronvermelding

Winpenny, J. T. (1991). Values for the environment: A guide to economic appraisal. Overseas Development Inst..

Chicago (17e ed.) Bronvermelding

Winpenny, James T. Values for the Environment: A Guide to Economic Appraisal. London: Overseas Development Inst., 1991.

MLA (8e ed.) Bronvermelding

Winpenny, James T. Values for the Environment: A Guide to Economic Appraisal. Overseas Development Inst., 1991.