National Research Council (U.S.). Transportation Research Board & National Research Council (U.S.). Transportation Research Board. Meeting. (2006). Pedestrians and bicycles. Transportation Research Board.
Chicago-referens (17:e uppl.)National Research Council (U.S.). Transportation Research Board och National Research Council (U.S.). Transportation Research Board. Meeting. Pedestrians and Bicycles. Washington, D.C: Transportation Research Board, 2006.
MLA-referens (9:e uppl.)National Research Council (U.S.). Transportation Research Board och National Research Council (U.S.). Transportation Research Board. Meeting. Pedestrians and Bicycles. Transportation Research Board, 2006.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.