"Hepatitis A In-Short". www.cdc.gov. Centers for Disease Control and Prevention. July 25, 2014. मूल से 10 दिसंबर 2015 को पुरालेखित. अभिगमन तिथि December 7, 2015.
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Ott, JJ; Irving, G; Wiersma, ST (December 2012). "Long-term protective effects of hepatitis A vaccines. A systematic review". Vaccine. 31 (1): 3–11. PMID22609026. डीओआइ:10.1016/j.vaccine.2012.04.104.
"Hepatitis A In-Short". www.cdc.gov. Centers for Disease Control and Prevention. July 25, 2014. मूल से 10 दिसंबर 2015 को पुरालेखित. अभिगमन तिथि December 7, 2015.