National Research Council (U.S.). Transportation Research Board, National Cooperative Highway Research Program, Pennsylvania State University. Dept. of Civil Engineering, Jovanis, P., & Gross, F. (2006). Core competencies for highway safety professionals. Transportation Research Board.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)National Research Council (U.S.). Transportation Research Board, National Cooperative Highway Research Program, Pennsylvania State University. Dept. of Civil Engineering, Paul Jovanis, và Frank Gross. Core Competencies for Highway Safety Professionals. Washington, D.C: Transportation Research Board, 2006.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)National Research Council (U.S.). Transportation Research Board, et al. Core Competencies for Highway Safety Professionals. Transportation Research Board, 2006.