Não informado. (1992). Water Environment Research. Water Environment Federation.
Chicagoスタイル(17版)引用形式Não informado. Water Environment Research. Alexandria, Va: Water Environment Federation, 1992.
MLA(8版)引用形式Não informado. Water Environment Research. Water Environment Federation, 1992.
警告: この引用は必ずしも正確ではありません.