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.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)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.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)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.