- U.S. Department of Laborwww.dol.gov
- American Medical Associationwww.ama-assn.org
- International Council of Nurseswww.icn.ch
- American Red Crosswww.redcross.org
- U.S. Bureau of Labor Statisticswww.bls.gov
- American Staffing Associationwww.americanstaffing.net
