International Symposium on Theory and Practice in Transport Economics Innsbruck, Austria, & European Conference of Ministers of Transport. (1999). Which changes for transport in the next century ?: Introductory reports and summary of discussions : 14th International Symposium on Theory and Practice in Transport Economics, Innsbruck, 21-23 October 1997. ECMT ; OECD Publications Service [distributor].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Symposium on Theory and Practice in Transport Economics Innsbruck, Austria, و European Conference of Ministers of Transport. Which Changes for Transport in the Next Century ?: Introductory Reports and Summary of Discussions : 14th International Symposium on Theory and Practice in Transport Economics, Innsbruck, 21-23 October 1997. Paris : Washington, D.C.: ECMT ; OECD Publications Service [distributor], 1999.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Symposium on Theory and Practice in Transport Economics Innsbruck, Austria, و European Conference of Ministers of Transport. Which Changes for Transport in the Next Century ?: Introductory Reports and Summary of Discussions : 14th International Symposium on Theory and Practice in Transport Economics, Innsbruck, 21-23 October 1997. ECMT ; OECD Publications Service [distributor], 1999.