National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Meeting, & National Research Council (U.S.). Committee on Highway Capacity. (1970). Highway capacity and quality of service: 7 reports. Highway Research Board.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Meeting, و National Research Council (U.S.). Committee on Highway Capacity. Highway Capacity and Quality of Service: 7 Reports. Washington: Highway Research Board, 1970.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Research Council (U.S.). Highway Research Board, et al. Highway Capacity and Quality of Service: 7 Reports. Highway Research Board, 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.