National Research Council (U.S.). Transportation Research Board. (1988). International roadside safety hardware research. Transportation Research Board, National Research Council.
Chicago-referens (17:e uppl.)National Research Council (U.S.). Transportation Research Board. International Roadside Safety Hardware Research. Washington, D.C: Transportation Research Board, National Research Council, 1988.
MLA-referens (9:e uppl.)National Research Council (U.S.). Transportation Research Board. International Roadside Safety Hardware Research. Transportation Research Board, National Research Council, 1988.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.