APA aipamena

United Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil;). (1990). United Nations Conference on Environment and Development. s.n.

Chicago Style aipamena

United Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil;). United Nations Conference on Environment and Development. S.L: s.n, 1990.

MLA aipamena

United Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil;). United Nations Conference on Environment and Development. s.n, 1990.