Não informado. Statistics of road traffic accidents in Europe and North America. United Nations, Economic Commission for Europe.
Chicago-viite (17. p.)Não informado. Statistics of Road Traffic Accidents in Europe and North America. New York: United Nations, Economic Commission for Europe.
MLA-viite (8. p.)Não informado. Statistics of Road Traffic Accidents in Europe and North America. United Nations, Economic Commission for Europe.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.