National bicycling and walking study /
prepared by University of North Carolina, Highway Safety Research Center, HDR Engineering, Inc.

APA Citation

United States. Federal Highway Administration., HDR Engineering., University of North Carolina (System). Highway Safety Research Center. (1991). National bicycling and walking study. Washington, D.C.: U.S. Department of Transportation, Federal Highway Administration.

MLA Citation

United States. Federal Highway Administration, HDR Engineering, and University of North Carolina (System). Highway Safety Research Center. National Bicycling And Walking Study. Washington, D.C.: U.S. Department of Transportation, Federal Highway Administration, 1991.