Não informado. (1975). Water international. International Water Resources Association.
Chicagoスタイル(17版)引用形式Não informado. Water International. Urbana, Ill: International Water Resources Association, 1975.
MLA(8版)引用形式Não informado. Water International. International Water Resources Association, 1975.
警告: この引用は必ずしも正確ではありません.