National Research Council (U.S.). Transportation Research Board. Committee on Energy Conservation and Transportation Demand. (1987). Research priorities in transportation and energy: A circular. Transportation Research Board, National Research Council.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Research Council (U.S.). Transportation Research Board. Committee on Energy Conservation and Transportation Demand. Research Priorities in Transportation and Energy: A Circular. Washington, D.C: Transportation Research Board, National Research Council, 1987.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Research Council (U.S.). Transportation Research Board. Committee on Energy Conservation and Transportation Demand. Research Priorities in Transportation and Energy: A Circular. Transportation Research Board, National Research Council, 1987.