- American Physical Therapy Associationwww.apta.org
- Mobility Internationalwww.miusa.org
- American Society for Pain Management Nursingwww.aspmn.org
- U.S. Department of Laborwww.dol.gov
- U.S. Bureau of Labor Statisticswww.bls.gov
- American Staffing Associationwww.americanstaffing.net
