- U.S. Department of Laborwww.dol.gov
- U.S. Bureau of Labor Statisticswww.bls.gov
- US Department of Health and Human Serviceswww.hhs.gov
- American Health Care Associationwww.ahcancal.org
- American Nurses Associationwww.nursingworld.org
- American Staffing Associationwww.americanstaffing.net
