National Research Council (U.S.). Transportation Research Board & National Cooperative Highway Research Program. (2002). Continuing project to synthesize information on highway problems. Transportation Research Board, National Research Council.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Research Council (U.S.). Transportation Research Board و National Cooperative Highway Research Program. Continuing Project to Synthesize Information on Highway Problems. Washington, D.C: Transportation Research Board, National Research Council, 2002.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Research Council (U.S.). Transportation Research Board و National Cooperative Highway Research Program. Continuing Project to Synthesize Information on Highway Problems. Transportation Research Board, National Research Council, 2002.