APA (7e ed.) Bronvermelding

(1981). Economics of environmental and natural resources policy. Westview Pr.

Chicago (17e ed.) Bronvermelding

Economics of Environmental and Natural Resources Policy. Boulder, Colo: Westview Pr, 1981.

MLA (9e ed.) Bronvermelding

Economics of Environmental and Natural Resources Policy. Westview Pr, 1981.

Let op: Deze citaties zijn niet altijd 100% accuraat.