Não informado. (1940). Sewage works engineering and municipal sanitation. Case Shepperd Mann.
Chicago (17e ed.) BronvermeldingNão informado. Sewage Works Engineering and Municipal Sanitation. New York: Case Shepperd Mann, 1940.
MLA (8e ed.) BronvermeldingNão informado. Sewage Works Engineering and Municipal Sanitation. Case Shepperd Mann, 1940.
Let op: Deze citaties zijn niet altijd 100% accuraat.