National Research Council (U.S.). Transportation Research Boar & National Research Council (U.S.). Transportation Research Board. Meeting. (2002). Freight transportation 2002. Transportation Research Board, National Academy of Sciences.
Chicago-referens (17:e uppl.)National Research Council (U.S.). Transportation Research Boar och National Research Council (U.S.). Transportation Research Board. Meeting. Freight Transportation 2002. Washington, D.C: Transportation Research Board, National Academy of Sciences, 2002.
MLA-referens (9:e uppl.)National Research Council (U.S.). Transportation Research Boar och National Research Council (U.S.). Transportation Research Board. Meeting. Freight Transportation 2002. Transportation Research Board, National Academy of Sciences, 2002.