Dils, R. E. (1957). The Coweeta Hydrologic laboratory September 1957. Department of agriculture forest service.
Chicago-referens (17:e uppl.)Dils, Robert E. The Coweeta Hydrologic Laboratory September 1957. U.S: Department of agriculture forest service, 1957.
MLA-referens (9:e uppl.)Dils, Robert E. The Coweeta Hydrologic Laboratory September 1957. Department of agriculture forest service, 1957.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.