Round Table on Transport Economics Paris, France, European Conference of Ministers of Transport. Economic Research Centre, Transport Research Centre, & ProQuest (Firm). (2007). Report of the One Hundred and Thirty Sixth Round Table on Transport Economics: Estimation and evaluation of transport costs. OECD : European Conference of Ministers of Transport.
Παραπομπή σε μορφή Chicago (17η εκδ.)Round Table on Transport Economics Paris, France, European Conference of Ministers of Transport. Economic Research Centre, Transport Research Centre, και ProQuest (Firm). Report of the One Hundred and Thirty Sixth Round Table on Transport Economics: Estimation and Evaluation of Transport Costs. Paris, France: OECD : European Conference of Ministers of Transport, 2007.
Παραπομπή σε μορφή MLA (9th εκδ.)Round Table on Transport Economics Paris, France, et al. Report of the One Hundred and Thirty Sixth Round Table on Transport Economics: Estimation and Evaluation of Transport Costs. OECD : European Conference of Ministers of Transport, 2007.