International Union for Conservation of Nature and Natural Resources. Commission on Environmental Law, International Council of Environmental Law, & IUCN Environmental Law Centre. (1995). International covenant on environment and development. IUCN--the World Conservation Union.
Chicago Style (17th ed.) CitationInternational Union for Conservation of Nature and Natural Resources. Commission on Environmental Law, International Council of Environmental Law, and IUCN Environmental Law Centre. International Covenant on Environment and Development. Gland, Switzerland: IUCN--the World Conservation Union, 1995.
MLA引文International Union for Conservation of Nature and Natural Resources. Commission on Environmental Law, et al. International Covenant on Environment and Development. IUCN--the World Conservation Union, 1995.