Association of American Railroads. Railroad Committee for the Study of Transportation. (1941). Report on coordination. s.n..
Lua i Stíl Chicago (17ú heag.)Association of American Railroads. Railroad Committee for the Study of Transportation. Report on Coordination. [S.l.: s.n., 1941.
Lua MLA (8ú heag.)Association of American Railroads. Railroad Committee for the Study of Transportation. Report on Coordination. s.n., 1941.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.