Não informado. (1989). Water Environment & Technology. Water Pollution Control Federation.
Chicagoスタイル(17版)引用形式Não informado. Water Environment & Technology. Alexandria, Va: Water Pollution Control Federation, 1989.
MLA(8版)引用形式Não informado. Water Environment & Technology. Water Pollution Control Federation, 1989.
警告: この引用は必ずしも正確ではありません.