National Research Council (U.S.). Transportation Research Board. Transportation research circular. The Board,.
Chicago-viite (17. p.)National Research Council (U.S.). Transportation Research Board. Transportation Research Circular. Washington, D.C.: The Board,.
MLA-viite (8. p.)National Research Council (U.S.). Transportation Research Board. Transportation Research Circular. The Board,.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.