Não informado. (1950). Water and sanitary engineer. DR Publications.
Chicagoスタイル(17版)引用形式Não informado. Water and Sanitary Engineer. Surrey, Inglaterra: DR Publications, 1950.
MLA(8版)引用形式Não informado. Water and Sanitary Engineer. DR Publications, 1950.
警告: この引用は必ずしも正確ではありません.