National Research Council (U.S.). Transportation Research Board. (1991). Highway safety: Older drivers, seat belts, alcohol, motorcycles, and pedestrians, 1991. Transportation Research Board.
Chicago-referens (17:e uppl.)National Research Council (U.S.). Transportation Research Board. Highway Safety: Older Drivers, Seat Belts, Alcohol, Motorcycles, and Pedestrians, 1991. Washington, D.C: Transportation Research Board, 1991.
MLA-referens (9:e uppl.)National Research Council (U.S.). Transportation Research Board. Highway Safety: Older Drivers, Seat Belts, Alcohol, Motorcycles, and Pedestrians, 1991. Transportation Research Board, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.