- US Department of Health and Human Serviceswww.hhs.gov
- US Department of Laborwww.dol.gov
- US Bureau of Labor Statisticswww.bls.gov
- National Council of State Boards of Nursingwww.ncsbn.org
- National Institute of Healthwww.nih.gov
- American Staffing Associationwww.americanstaffing.net
