National Research Council (U.S.). Highway Research Board & National Research Council. Highway Research Board. (1974). Transportation for the poor, the elderly, and the disadvantaged: 5 reports prepared for the 53rd annual meeting of the Highway Research Board. Transportation Research Board, National Research Council.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Research Council (U.S.). Highway Research Board و National Research Council. Highway Research Board. Transportation for the Poor, the Elderly, and the Disadvantaged: 5 Reports Prepared for the 53rd Annual Meeting of the Highway Research Board. [Washington]: Transportation Research Board, National Research Council, 1974.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Research Council (U.S.). Highway Research Board و National Research Council. Highway Research Board. Transportation for the Poor, the Elderly, and the Disadvantaged: 5 Reports Prepared for the 53rd Annual Meeting of the Highway Research Board. Transportation Research Board, National Research Council, 1974.