International Union for Conservation of Nature and atural Resourcesd. (1984). Population and natural resources and other reports. IUCN.
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Chicago Style (17th ed.) Zitazioa
International Union for Conservation of Nature and atural Resourcesd. Population and Natural Resources and Other Reports. Gland: IUCN, 1984.
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MLA (9th ed.) Zitazioa
International Union for Conservation of Nature and atural Resourcesd. Population and Natural Resources and Other Reports. IUCN, 1984.
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Kontuz: berrikusi erreferentzia hauek erabili aurretik.