"Hepatitis A Disease Questions and Answers." Vaccine Information for the Public and Health Professionals. Web. 02 Aug. 2011. <http://www.vaccineinformation.org/hepa/qandadis.asp>.
"What I Need to Know about Hepatitis A." National Digestive Diseases Information Clearinghouse. 2009. Web. 02 Aug. 2011. <http://digestive.niddk.nih.gov/ddiseases/pubs/hepa_ez/>.Overview of hepatitis A virus infection in children. UpToDate; January 19,2011