World Conservation Monitoring Centre. (1992). Protected areas of the world: A review of national systems. International Union for Conservation of Nature and Natural Resources.
Chicago Style (17th ed.) CitationWorld Conservation Monitoring Centre. Protected Areas of the World: A Review of National Systems. Gland, Switzerland: International Union for Conservation of Nature and Natural Resources, 1992.
MLA引文World Conservation Monitoring Centre. Protected Areas of the World: A Review of National Systems. International Union for Conservation of Nature and Natural Resources, 1992.
警告：這些引文格式不一定是100％准確.