(2001). NTAD 2001: A collection of spatial data for use in GIS-based applications / Bureau of Transportation Statistics, U.S. Department of Transportation.
Cita Chicago Style (17a ed.)NTAD 2001: A Collection of Spatial Data for Use in GIS-based Applications / Bureau of Transportation Statistics, U.S. Department of Transportation. 2001.
Cita MLA (9a ed.)NTAD 2001: A Collection of Spatial Data for Use in GIS-based Applications / Bureau of Transportation Statistics, U.S. Department of Transportation. 2001.
Precaución: Estas citas no son 100% exactas.