- American Staffing Association www.americanstaffing.net
- International Council of Nurseswww.icn.ch
- National Institutes of Health www.health.nih.gov
- U.S. Department of Labor www.dol.gov
- U.S. Bureau of Labor Statisticswww.bls.gov
- U.S. Department of Health & Human Serviceswww.hhs.gov
