United Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil;). (1990). United Nations Conference on Environment and Development. s.n.
Chicago Style (17th ed.) CitationUnited Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil;). United Nations Conference on Environment and Development. S.L: s.n, 1990.
MLA (9th ed.) CitationUnited Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil;). United Nations Conference on Environment and Development. s.n, 1990.
Warning: These citations may not always be 100% accurate.