APA

McNeely J. A., Conservation International, International Union for Conservation of Nature and Natural Resources, World Resources Institute & World Wildlife Fund-Us. (1990). Conserving the world´s biological diversity. Gland, Switzerland: IUCN ; Washington, D.C. : WRI, WWF-US, the World Bank.

Chicago

McNeely Jeffrey A, Conservation International, International Union for Conservation of Nature and Natural Resources, World Resources Institute and World Wildlife Fund-Us. 1990. Conserving the world´s biological diversity. Gland, Switzerland: IUCN ; Washington, D.C. : WRI, WWF-US, the World Bank.

Harvard

McNeely J. A., Conservation International, International Union for Conservation of Nature and Natural Resources, World Resources Institute and World Wildlife Fund-Us. (1990). Conserving the world´s biological diversity. Gland, Switzerland: IUCN ; Washington, D.C. : WRI, WWF-US, the World Bank.

MLA

McNeely Jeffrey A, Conservation International, International Union for Conservation of Nature and Natural Resources, World Resources Institute and World Wildlife Fund-Us. Conserving the world´s biological diversity. Gland, Switzerland: IUCN ; Washington, D.C. : WRI, WWF-US, the World Bank. 1990.