Παραπομπή APA
European Commission. (1999). Tropic: Traffic optimisation by the integration of information and control. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleEuropean Commission. Tropic: Traffic Optimisation By the Integration of Information and Control. Luxembourg: Office for Official Publications of the European Communities, 1999.
Παραπομπή MLAEuropean Commission. Tropic: Traffic Optimisation By the Integration of Information and Control. Luxembourg: Office for Official Publications of the European Communities, 1999.
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