Universities National Bureau Committee for Economic Research. (1965). Transportation economics: A conference of the Universities-National bureau committee for economic research. New York: Distributed by Columbia University Press.
Trích dẫn kiểu ChicagoUniversities National Bureau Committee for Economic Research. Transportation Economics: A Conference of the Universities-National Bureau Committee for Economic Research. New York: Distributed by Columbia University Press, 1965.
Trích dẫn MLAUniversities National Bureau Committee for Economic Research. Transportation Economics: A Conference of the Universities-National Bureau Committee for Economic Research. New York: Distributed by Columbia University Press, 1965.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.