Não informado. (1896). Water supply and irrigation papers of the United States Geological Survey. U.S. Geological Survey.
Chicago-referens (17:e uppl.)Não informado. Water Supply and Irrigation Papers of the United States Geological Survey. Washington: U.S. Geological Survey, 1896.
MLA-referens (8:e uppl.)Não informado. Water Supply and Irrigation Papers of the United States Geological Survey. U.S. Geological Survey, 1896.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.