Cita APA

United Nations. (1993). Protection of water resources and aquatic ecosystems. Geneva: Economic Commission for Europa.

Citación estilo Chicago

United Nations. Protection of Water Resources and Aquatic Ecosystems. Geneva: Economic Commission for Europa, 1993.

Cita MLA

United Nations. Protection of Water Resources and Aquatic Ecosystems. Geneva: Economic Commission for Europa, 1993.

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