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.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational 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.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNational 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.