Não informado. (1940). Sewage works engineering and municipal sanitation. Case Shepperd Mann.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Sewage Works Engineering and Municipal Sanitation. New York: Case Shepperd Mann, 1940.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Sewage Works Engineering and Municipal Sanitation. Case Shepperd Mann, 1940.
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