Não informado. (1881). Proceedings of the American Water Works Association. American Water Works Association.
Chicagoスタイル(17版)引用形式Não informado. Proceedings of the American Water Works Association. Denver, Colo: American Water Works Association, 1881.
MLA(8版)引用形式Não informado. Proceedings of the American Water Works Association. American Water Works Association, 1881.
警告: この引用は必ずしも正確ではありません.