Universities--National Bureau Committee for Economic Research. (1965). Transportation economics: A conference of the Universities-National Bureau Committee for Economic Research. National Bureau of Economic Research; distributed by Columbia University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Universities--National Bureau Committee for Economic Research. Transportation Economics: A Conference of the Universities-National Bureau Committee for Economic Research. New York: National Bureau of Economic Research; distributed by Columbia University Press, 1965.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Universities--National Bureau Committee for Economic Research. Transportation Economics: A Conference of the Universities-National Bureau Committee for Economic Research. National Bureau of Economic Research; distributed by Columbia University Press, 1965.