APA

European conference of Ministers of Transport. Round table conference 52, . (1981). Transport and energy. Paris: European conference of Ministers of Transport. Round table conference 52.

Chicago

European conference of Ministers of Transport. Round table conference 52, . 1981. Transport and energy. Paris: European conference of Ministers of Transport. Round table conference 52.

Harvard

European conference of Ministers of Transport. Round table conference 52, . (1981). Transport and energy. Paris: European conference of Ministers of Transport. Round table conference 52.

MLA

European conference of Ministers of Transport. Round table conference 52, . Transport and energy. Paris: European conference of Ministers of Transport. Round table conference 52. 1981.