Best practice guide :
reducing the illegal passing of school buses.

APA Citation

United States. National Highway Traffic Safety Administration. (2002). Best practice guide: reducing the illegal passing of school buses. [Washington, D.C.?]: U.S. Dept. of Transportation, National Highway Traffic Safety Administration.

MLA Citation

United States. National Highway Traffic Safety Administration. Best Practice Guide: Reducing the Illegal Passing of School Buses. [Washington, D.C.?]: U.S. Dept. of Transportation, National Highway Traffic Safety Administration, 2002.

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