APA (7e ed.) Bronvermelding

United Nations Development Programme & World Resources Institute. (1989). Natural endowments: Financing resource conservation for development ; international conservation financing project report. World Resources Institute.

Chicago (17e ed.) Bronvermelding

United Nations Development Programme en World Resources Institute. Natural Endowments: Financing Resource Conservation for Development ; International Conservation Financing Project Report. Washington, D.C., USA: World Resources Institute, 1989.

MLA (9e ed.) Bronvermelding

United Nations Development Programme en World Resources Institute. Natural Endowments: Financing Resource Conservation for Development ; International Conservation Financing Project Report. World Resources Institute, 1989.