1. U.S. Department of Health and Human Services Healthy people 2010: understanding and improving health 2000 http://www.healthypeople.gov/2010
2. Kutner M Greenberg E Jin Y Paulsen C The health literacy of American's adults: results from the 2003 national assessment of adult literacy (NCES2006-483) 2006 http://nces.ed.gov/pubs2006/2006483.pdf
3. U.S. Department of Health and Human Services National call to action to promote oral health 2003 http://www.surgeongeneral.gov/topics/oralhealth/nationalcalltoaction.html
4. U.S. Department of Health and Human Services National action plan to improve health literacy 2010 http://www.health.gov/communication/hlactionplan/pdf/Health_Literacy_Action_Plan.pdf