APA-viite (7. p.)
ebrary, Inc. (2001). Contracting for bus and demand-responsive transit services: A survey of U.S. practice and experience. Transportation Research Board.
Chicago-viite (17. p.)
ebrary, Inc. Contracting for Bus and Demand-responsive Transit Services: A Survey of U.S. Practice and Experience. Washington, DC: Transportation Research Board, 2001.
MLA-viite (9. p.)
ebrary, Inc. Contracting for Bus and Demand-responsive Transit Services: A Survey of U.S. Practice and Experience. Transportation Research Board, 2001.
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