- U.S. Department of Laborwww.dol.gov
- U.S. Bureau of Labor Statisticwww.bls.gov
- Mind Tools: Finding Career Directionwww.mindtools.com.pages.article.newCDV_97.htm
- American Staffing Associationwww.americanstaffing.net
- U.S. Department of Health & Human Serviceswww.hhs.gov
