APA
European Conference of Ministers of Transport, ECMT & Round Table Conference 91. (1993). Possibilities and limations of combined transport. Report of the ninety-first round table on transport economics held in Paris on 24th-25th October 1991. Paris: European Conference of Ministers of Transport.
Chicago
European Conference of Ministers of Transport, ECMT and Round Table Conference 91. 1993. Possibilities and limations of combined transport. Report of the ninety-first round table on transport economics held in Paris on 24th-25th October 1991. Paris: European Conference of Ministers of Transport.
Harvard
European Conference of Ministers of Transport, ECMT and Round Table Conference 91. (1993). Possibilities and limations of combined transport. Report of the ninety-first round table on transport economics held in Paris on 24th-25th October 1991. Paris: European Conference of Ministers of Transport.
MLA
European Conference of Ministers of Transport, ECMT and Round Table Conference 91. Possibilities and limations of combined transport. Report of the ninety-first round table on transport economics held in Paris on 24th-25th October 1991. Paris: European Conference of Ministers of Transport. 1993.