Não informado. (1940). Sewage works engineering and municipal sanitation. Case Shepperd Mann.
Lua i Stíl Chicago (17ú heag.)Não informado. Sewage Works Engineering and Municipal Sanitation. New York: Case Shepperd Mann, 1940.
Lua MLA (8ú heag.)Não informado. Sewage Works Engineering and Municipal Sanitation. Case Shepperd Mann, 1940.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.