National Research Council (U.S.). Transportation Research Board. (1997). Continuing project to synthesize information on highway problems. Transportation Research Board, National Research Council.
Chicago-referens (17:e uppl.)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, 1997.
MLA-referens (9:e uppl.)National Research Council (U.S.). Transportation Research Board. Continuing Project to Synthesize Information on Highway Problems. Transportation Research Board, National Research Council, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.