APA

European Conference of Ministers of Transport, ECMT & Round Table Conference 80. (1989). Systems of road infrastructure cost coverage. Paris: European Conference of Ministers of Transport.

Chicago

European Conference of Ministers of Transport, ECMT and Round Table Conference 80. 1989. Systems of road infrastructure cost coverage. Paris: European Conference of Ministers of Transport.

Harvard

European Conference of Ministers of Transport, ECMT and Round Table Conference 80. (1989). Systems of road infrastructure cost coverage. Paris: European Conference of Ministers of Transport.

MLA

European Conference of Ministers of Transport, ECMT and Round Table Conference 80. Systems of road infrastructure cost coverage. Paris: European Conference of Ministers of Transport. 1989.