Cita APA (7a ed.)

United Nations Conference on Environment and Development. (1992). Agenda 21: Program of action for sustainable development. United Nations.

Cita Chicago Style (17a ed.)

United Nations Conference on Environment and Development. Agenda 21: Program of Action for Sustainable Development. Nueva York: United Nations, 1992.

Cita MLA (9a ed.)

United Nations Conference on Environment and Development. Agenda 21: Program of Action for Sustainable Development. United Nations, 1992.