(1941). Bicycle control in metropolitan cities. Portland Branch, Bureau of Municipal Research and Service, University of Oregon, cooperating with the League of Oregon Cities.
Lua i Stíl Chicago (17ú heag.)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.
Lua MLA (8ú heag.)Bicycle Control in Metropolitan Cities. Portland Branch, Bureau of Municipal Research and Service, University of Oregon, cooperating with the League of Oregon Cities, 1941.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.