ENGINEERS, I. O. T. (1993). The Traffic Safety Toolbox: A primer on traffic safety. Institute of Transportation Engineers.
Chicago-viite (17. p.)ENGINEERS, INSTITUTE OF TRANSPORTATION. The Traffic Safety Toolbox: A Primer on Traffic Safety. Institute of Transportation Engineers, 1993.
MLA-viite (8. p.)ENGINEERS, INSTITUTE OF TRANSPORTATION. The Traffic Safety Toolbox: A Primer on Traffic Safety. Institute of Transportation Engineers, 1993.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.