European Conference of Ministers of Transport & OECD. (1999). Which changes for transport in the next century?: Introductory reports and summary of discussions: 14th international symposioum on theory and practice in transport economics. ECMT.
Παραπομπή σε μορφή Chicago (17η εκδ.)European Conference of Ministers of Transport και OECD. Which Changes for Transport in the Next Century?: Introductory Reports and Summary of Discussions: 14th International Symposioum on Theory and Practice in Transport Economics. France: ECMT, 1999.
Παραπομπή σε μορφή MLA (8th εκδ.)European Conference of Ministers of Transport και OECD. Which Changes for Transport in the Next Century?: Introductory Reports and Summary of Discussions: 14th International Symposioum on Theory and Practice in Transport Economics. ECMT, 1999.
