Fogel, R. W. (1964). Railroads and American economic growth: Essays in econometric history. Johns Hopkins Press.
Chicago-referens (17:e uppl.)Fogel, Robert William. Railroads and American Economic Growth: Essays in Econometric History. Baltimore: Johns Hopkins Press, 1964.
MLA-referens (8:e uppl.)Fogel, Robert William. Railroads and American Economic Growth: Essays in Econometric History. Johns Hopkins Press, 1964.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.