National Research Council (U.S.). Transportation Research Board. (1992). Nonmotorized transportation. Transportation Research Board, National Research Council.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Research Council (U.S.). Transportation Research Board. Nonmotorized Transportation. Washington, D.C: Transportation Research Board, National Research Council, 1992.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Research Council (U.S.). Transportation Research Board. Nonmotorized Transportation. Transportation Research Board, National Research Council, 1992.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.