Ulberg, C. G. (1990). Issues in the shift from regional to local provision of bus service. Transportation Research Board, National Research Council.
Chicago-Zitierstil (17. Ausg.)Ulberg, Cyrus G. Issues in the Shift from Regional to Local Provision of Bus Service. Washington, D.C: Transportation Research Board, National Research Council, 1990.
MLA-Zitierstil (9. Ausg.)Ulberg, Cyrus G. Issues in the Shift from Regional to Local Provision of Bus Service. Transportation Research Board, National Research Council, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.