National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, & Antonucci, N. D. (2004). Guidance for implementation of the AASHTO Strategic Highway Safety Plan. 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 Nicholas D. Antonucci. Guidance for Implementation of the AASHTO Strategic Highway Safety Plan. Washington, D.C: Transportation Research Board, 2004.
MLA-referens (9:e uppl.)National Cooperative Highway Research Program, et al. Guidance for Implementation of the AASHTO Strategic Highway Safety Plan. Transportation Research Board, 2004.