Immunizations for Prevention of Disease in Children: References

"IMMUNIZATIONS/VACCINES." AMERICAN ACADEMY OF PEDIATRICS WEB SITE. Web. 20 June 2011. <http://www.aap.org/healthtopics/immunizations.cfm>.

"General Recommendations on Immunization." Centers for Disease Control and Prevention. Web. 20 June 2011. <http://www.cdc.gov/mmwr/preview/mmwrhtml/rr6002a1.htm?s_cid=rr6002a1_e>.