Não informado. Statistics of road traffic accidents in Europe and North America. United Nations, Economic Commission for Europe.
Chicago-referens (17:e uppl.)Não informado. Statistics of Road Traffic Accidents in Europe and North America. New York: United Nations, Economic Commission for Europe.
MLA-referens (8:e uppl.)Não informado. Statistics of Road Traffic Accidents in Europe and North America. United Nations, Economic Commission for Europe.
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