National Research Council (U.S.). Transportation Research Board. (1998). Progress in transportation data 1998. National Academy Press.
Citación estilo ChicagoNational Research Council (U.S.). Transportation Research Board. Progress in Transportation Data 1998. Washington, D.C: National Academy Press, 1998.
Cita MLANational Research Council (U.S.). Transportation Research Board. Progress in Transportation Data 1998. National Academy Press, 1998.
Warning: These citations may not always be 100% accurate.