International Union for Conservation of Nature and Natural Resources., International Union for Conservation of Nature and Natural Resources. Threatened Plants Committee., Lucas, G., & Synge, H. (1978). The IUCN plant red data book: Comprising ... 250 selected plants threatened on a world scale. Morges, Switzerland: IUCN.
استشهاد بنمط شيكاغوInternational Union for Conservation of Nature and Natural Resources., International Union for Conservation of Nature and Natural Resources. Threatened Plants Committee, Gren Lucas, و Hugh Synge. The IUCN Plant Red Data Book: Comprising ... 250 Selected Plants Threatened On a World Scale. Morges, Switzerland: IUCN, 1978.
MLA استشهادInternational Union for Conservation of Nature and Natural Resources., International Union for Conservation of Nature and Natural Resources. Threatened Plants Committee, Gren Lucas, و Hugh Synge. The IUCN Plant Red Data Book: Comprising ... 250 Selected Plants Threatened On a World Scale. Morges, Switzerland: IUCN, 1978.