Illinois supplement to the national manual on uniform traffic control devices.
APA Citation
Illinois. Dept. of Transportation. (1990). Illinois supplement to the national manual on uniform traffic control devices. Springfield, Ill.: Illinois Dept. of Transportation.
MLA Citation
Illinois. Dept. of Transportation. Illinois Supplement to the National Manual On Uniform Traffic Control Devices. Springfield, Ill.: Illinois Dept. of Transportation, 1990.
Warning: These citations may not always be complete (especially for serials).