National Research Council (U.S.). Transportation Research Board. Committee on Bicycling and Bicycle Facilities. (1988). Bicycling and bicycle facilities research problems statements. Transportation Research Board, National Research Council.
Chicago-referens (17:e uppl.)National Research Council (U.S.). Transportation Research Board. Committee on Bicycling and Bicycle Facilities. Bicycling and Bicycle Facilities Research Problems Statements. Washington, D.C: Transportation Research Board, National Research Council, 1988.
MLA-referens (9:e uppl.)National Research Council (U.S.). Transportation Research Board. Committee on Bicycling and Bicycle Facilities. Bicycling and Bicycle Facilities Research Problems Statements. Transportation Research Board, National Research Council, 1988.