1. National Center for Chronic Disease Prevention and Health Promotion, Oral Health Resources Synopses of state and territorial dental public health programs, 2009 2009 http://apps.nccd.cdc.gov/synopses/index.asp#Synopses
2. The Henry J. Kaiser Family Foundation Individual state profiles 2009 http://statehealthfacts.org/profile.jsp
3. U.S. Census Bureau State rankings - statistical abstract of the United States: personal income per capita in current dollars 2007 http://www.census.gov/statab/ranks/rank29.html
4. Centers for Medicare and Medicaid Services U.S. state estimates by state of residence- dental services, 1991-2004 2010 http://www.cms.gov/NationalHealthExpendData/05_NationalHealthAccountsStateHealthAccountsResidence.asp