National Cooperative Highway Research Program & National Research Council (U.S.). Transportation Research Board. (2004). Continuing project to synthesize information on highway problems. Transportation Research Board, National Research Council.
Citazione stile Chigago Style (17a edizione)National Cooperative Highway Research Program e National Research Council (U.S.). Transportation Research Board. Continuing Project to Synthesize Information on Highway Problems. Washington, D.C: Transportation Research Board, National Research Council, 2004.
Citatione MLA (9a ed.)National Cooperative Highway Research Program e National Research Council (U.S.). Transportation Research Board. Continuing Project to Synthesize Information on Highway Problems. Transportation Research Board, National Research Council, 2004.