Roy Jorgensen Associates, National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, & United States. Federal Highway Administration. (1978). Cost and safety effectiveness of highway design elements. Transportation Research Board, National Research Council.
芝加哥风格引文Roy Jorgensen Associates, National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, 与 United States. Federal Highway Administration. Cost and Safety Effectiveness of Highway Design Elements. Washington, D.C: Transportation Research Board, National Research Council, 1978.
MLA引文Roy Jorgensen Associates, et al. Cost and Safety Effectiveness of Highway Design Elements. Transportation Research Board, National Research Council, 1978.