Cita APA

National Research Council (U.S.). Transportation Research Board & National Research Council (U.S.). Transportation Research Board. Meeting. (2003). Traffic control devices, visibility, and rail-highway grade crossings, 2003. Transportation research record.

Citación estilo Chicago

National Research Council (U.S.). Transportation Research Board and National Research Council (U.S.). Transportation Research Board. Meeting. Traffic Control Devices, Visibility, and Rail-highway Grade Crossings, 2003. Washington, D.C: Transportation research record, 2003.

Cita MLA

National Research Council (U.S.). Transportation Research Board and National Research Council (U.S.). Transportation Research Board. Meeting. Traffic Control Devices, Visibility, and Rail-highway Grade Crossings, 2003. Transportation research record, 2003.