APA-viite (7. p.)

McGrath. William R. A challenge to U.S. traffic engineers. Traffic engineering : official publication of the Institute of Transportation Engineers.

Chicago-viite (17. p.)

McGrath. William R. "A Challenge to U.S. Traffic Engineers." Traffic Engineering : Official Publication of the Institute of Transportation Engineers .

MLA-viite (9. p.)

McGrath. William R. "A Challenge to U.S. Traffic Engineers." Traffic Engineering : Official Publication of the Institute of Transportation Engineers, .