Não informado. (2004). Sewage Works Journal. Federation of Sewage Works Associations.
Chicagoスタイル(17版)引用形式Não informado. Sewage Works Journal. Easton, Pa: Federation of Sewage Works Associations, 2004.
MLA(8版)引用形式Não informado. Sewage Works Journal. Federation of Sewage Works Associations, 2004.
警告: この引用は必ずしも正確ではありません.