Cita APA (7a ed.)
World Congress on National Parks and Protected Areas. (1993). Parks for life, IV th: 1992. IUCN.
Cita Chicago Style (17a ed.)
World Congress on National Parks and Protected Areas. Parks for Life, IV Th: 1992. Gland: IUCN, 1993.
Cita MLA (9a ed.)
World Congress on National Parks and Protected Areas. Parks for Life, IV Th: 1992. IUCN, 1993.
Precaución: Estas citas no son 100% exactas.