International Union for Conservation of Nature and Natural Resources, World Conservation Monitoring Centre, Association for Biodiversity Information, & International Union for Conservation of Nature and Natural Resources. Species Survival Commission. (1998). IUCN red list of threatened plants. International Union for Conservation of Nature and Natural Resources.
Citazione stile Chigago Style (17a edizione)International Union for Conservation of Nature and Natural Resources, World Conservation Monitoring Centre, Association for Biodiversity Information, e International Union for Conservation of Nature and Natural Resources. Species Survival Commission. IUCN Red List of Threatened Plants. Gland, Switzerland, Cambridge, UK: International Union for Conservation of Nature and Natural Resources, 1998.
Citatione MLA (9a ed.)International Union for Conservation of Nature and Natural Resources, et al. IUCN Red List of Threatened Plants. International Union for Conservation of Nature and Natural Resources, 1998.