National Research Council (U.S.). Transportation Research Board. (1992). Public transit: Management, operations planning, and development. Transportation Research Board, National Research Council.
Dyfyniad Arddull ChicagoNational Research Council (U.S.). Transportation Research Board. Public Transit: Management, Operations Planning, and Development. Washington, D.C: Transportation Research Board, National Research Council, 1992.
Dyfyniad MLANational Research Council (U.S.). Transportation Research Board. Public Transit: Management, Operations Planning, and Development. Transportation Research Board, National Research Council, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.