- American Society for Pain Management Nursingwww.aspmn.org
- American Staffing Associationwww.americanstaffing.net
- National Council on Disabilitywww.ncd.gov
- National Institutes of Healthwww.nih.gov
- U.S. Bureau of Labor Statisticswww.bls.gov
- U.S. Department of Health and Human Serviceswww.hhs.gov
- International Council of Nurseswww.icn.ch
