United Nations. Department of Economic and Social Affairs. Triennial report on water resources development. [s.n.].
Cita Chicago (17th ed.)United Nations. Department of Economic and Social Affairs. Triennial Report on Water Resources Development. New York: [s.n.].
Cita MLA (9th ed.)United Nations. Department of Economic and Social Affairs. Triennial Report on Water Resources Development. [s.n.].
Atenció: Aquestes cites poden no estar 100% correctes.