National Research Council (U.S.). Transportation Research Board. (1988). State role in public transportation. Transportation Research Board, National Research Council.
Cita Chicago (17th ed.)National Research Council (U.S.). Transportation Research Board. State Role in Public Transportation. Washington, D.C: Transportation Research Board, National Research Council, 1988.
Cita MLA (9th ed.)National Research Council (U.S.). Transportation Research Board. State Role in Public Transportation. Transportation Research Board, National Research Council, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.