1. U.S. Congress National Adult Literacy Act of 1991 http://www.eric.ed.gov/PDFS/ED341851.pdf
2. Health literacy: a prescription to end confusion http://www.iom.edu/Reports/2004/Health-Literacy-A-Prescription-to-End-Confusion.aspx 2012
3. Health literacy: a concept/dimensional analysis;Mancuso;Nurs Health Sci,2008