1. Guide for the development of bicycle facilities;American Association of State Highway and Transportation Officials,1991
2. Injuries to bicyclists: A national perspective;Baker,1993
3. Bicycling reference book: Transportation issue;Bicycle Institute of America,1993
4. Bicycle helmet use among Maryland children: Effect of legislation and education;Cote;Pediatrics,1992
5. Bicycle helmet use by children — Evaluation of a community-wide helmet campaign;DiGuiseppi;Journal of the American Medical Association,1989