National Research Council (U.S.). Transportation Research Board & Allen, W. B. (1985). Strategic planning for freight: Issues and research needs. Transportation Research Board, National Research Council.
Cita Chicago (17th ed.)National Research Council (U.S.). Transportation Research Board i W. Bruce Allen. Strategic Planning for Freight: Issues and Research Needs. Washington, D.C: Transportation Research Board, National Research Council, 1985.
Cita MLA (9th ed.)National Research Council (U.S.). Transportation Research Board i W. Bruce Allen. Strategic Planning for Freight: Issues and Research Needs. Transportation Research Board, National Research Council, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.