Não informado. (1938). Traffic Engineering. Institute of Traffic Engineering.
Chicago-Zitierstil (17. Ausg.)Não informado. Traffic Engineering. New York: Institute of Traffic Engineering, 1938.
MLA-Zitierstil (8. Ausg.)Não informado. Traffic Engineering. Institute of Traffic Engineering, 1938.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.