National Cooperative Highway Research Program & National Research Council (U.S.). Transportation Research Board. (1984). Continuing project to synthesize information on highway problems. Transportation Research Board.
Lua i Stíl Chicago (17ú heag.)National Cooperative Highway Research Program agus National Research Council (U.S.). Transportation Research Board. Continuing Project to Synthesize Information on Highway Problems. Washington, D.C: Transportation Research Board, 1984.
Lua MLA (9ú heag.)National Cooperative Highway Research Program agus National Research Council (U.S.). Transportation Research Board. Continuing Project to Synthesize Information on Highway Problems. Transportation Research Board, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.