(1941). Bicycle control in metropolitan cities. Portland Branch, Bureau of Municipal Research and Service, University of Oregon, cooperating with the League of Oregon Cities.
Chicago-referens (17:e uppl.)Bicycle Control in Metropolitan Cities. Eugene: Portland Branch, Bureau of Municipal Research and Service, University of Oregon, cooperating with the League of Oregon Cities, 1941.
MLA-referens (8:e uppl.)Bicycle Control in Metropolitan Cities. Portland Branch, Bureau of Municipal Research and Service, University of Oregon, cooperating with the League of Oregon Cities, 1941.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.