Koffman, D. (2004). Operational experiences with flexible transit services. Transportation Research Board.
Cita Chicago Style (17a ed.)Koffman, David. Operational Experiences with Flexible Transit Services. Washington, D.C: Transportation Research Board, 2004.
Cita MLA (9a ed.)Koffman, David. Operational Experiences with Flexible Transit Services. Transportation Research Board, 2004.
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