National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, & Washington, S. (2006). Incorporating safety into long-range transportation planning. Transportation Research Board.
Chicago-referens (17:e uppl.)National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, och Simon Washington. Incorporating Safety into Long-range Transportation Planning. Washington, D.C: Transportation Research Board, 2006.
MLA-referens (9:e uppl.)National Cooperative Highway Research Program, et al. Incorporating Safety into Long-range Transportation Planning. Transportation Research Board, 2006.