Universities-National Bureau Committee for Economic Research & National Bureau of Economic Research. (1965). Transportation economics ; a conference of the Universities--National Bureau Committee for Economic Research. Columbia Univ. Press.
Citazione stile Chigago Style (17a edizione)Universities-National Bureau Committee for Economic Research e National Bureau of Economic Research. Transportation Economics ; a Conference of the Universities--National Bureau Committee for Economic Research. New York, National Bureau of Econ. Res: Columbia Univ. Press, 1965.
Citatione MLA (9a ed.)Universities-National Bureau Committee for Economic Research e National Bureau of Economic Research. Transportation Economics ; a Conference of the Universities--National Bureau Committee for Economic Research. Columbia Univ. Press, 1965.