Não informado. (1977). Transportation Engineering. Institute of Transportation Engineers.
Chicago-Zitierstil (17. Ausg.)Não informado. Transportation Engineering. Arlington, Va: Institute of Transportation Engineers, 1977.
MLA-Zitierstil (8. Ausg.)Não informado. Transportation Engineering. Institute of Transportation Engineers, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.