Illinois travel statistics.

APA Citation

United States. Federal Highway Administration., Illinois. Dept. of Transportation. Office of Planning and Programming. Illinois travel statistics. [Springfield, Ill.]: State of Illinois, Department of Transportation, Office of Planning and Programming.

MLA Citation

United States. Federal Highway Administration, and Illinois. Dept. of Transportation. Office of Planning and Programming. Illinois Travel Statistics. [Springfield, Ill.]: State of Illinois, Department of Transportation, Office of Planning and Programming,

Warning: These citations may not always be complete (especially for serials).