Παραπομπή σε μορφή APA (7η εκδ.)
ebrary, Inc. (2001). Contracting for bus and demand-responsive transit services: A survey of U.S. practice and experience. Transportation Research Board.
Παραπομπή σε μορφή Chicago (17η εκδ.)
ebrary, Inc. Contracting for Bus and Demand-responsive Transit Services: A Survey of U.S. Practice and Experience. Washington, DC: Transportation Research Board, 2001.
Παραπομπή σε μορφή MLA (9th εκδ.)
ebrary, Inc. Contracting for Bus and Demand-responsive Transit Services: A Survey of U.S. Practice and Experience. Transportation Research Board, 2001.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.