European rules concerning road traffic, signs and signals :
Vienna 1968-Geneva 1971.
APA Citation
European Conference of Ministers of Transport. (1971). European rules concerning road traffic, signs and signals: Vienna 1968-Geneva 1971. [Paris]: European Conference of Ministers of Transport.
MLA Citation
European Conference of Ministers of Transport. European Rules Concerning Road Traffic, Signs And Signals: Vienna 1968-Geneva 1971. [Paris]: European Conference of Ministers of Transport, 1971.
Warning: These citations may not always be complete (especially for serials).