United States. Federal Highway Administration. International Scanning Study Team, United States. Federal Highway Administration. Office of International Programs, American Trade Initiatives, Inc, American Association of State Highway and Transportation Officials, National Cooperative Highway Research Program, & Ernst, S. (2006). Underground transportation systems in Europe: Safety, operations, and emergency response. Office of International Programs, Federal Highway Administration.
Chicago Style (17th ed.) CitationUnited States. Federal Highway Administration. International Scanning Study Team, United States. Federal Highway Administration. Office of International Programs, Inc American Trade Initiatives, American Association of State Highway and Transportation Officials, National Cooperative Highway Research Program, and Steven Ernst. Underground Transportation Systems in Europe: Safety, Operations, and Emergency Response. Washington, DC: Office of International Programs, Federal Highway Administration, 2006.
MLA (9th ed.) CitationUnited States. Federal Highway Administration. International Scanning Study Team, et al. Underground Transportation Systems in Europe: Safety, Operations, and Emergency Response. Office of International Programs, Federal Highway Administration, 2006.