1. Centers for Disease Control and Prevention. Outbreaks chronology: Ebola virus disease [cited 2014 Jan 18]. http://www.cdc.gov/vhf/ebola/outbreaks/history/chronology.html
2. United Nations Development Programme. Human development report 2014 [cited 2014 Jan 18]. http://hdr.undp.org/en/2014-report
3. World Bank. GDP per capita, 2013 [cited 2014 Jan 18]. http://data.worldbank.org/indicator/NY.GDP.PCAP.CD
4. United Nations Educational, Scientific and Cultural Organization (UNESCO) Institute for Statistics. UNESCO eAtlas of literacy: Liberia. Adult literacy rate, population 15+, both sexes [cited 2014 Jan 18]. http://tellmaps.com/uis/literacy/
5. Liberia battles crippling shortage in health workers. Mail & Guardian. January 14, 2009 [cited 2014 Jan 18]. http://mg.co.za/article/2009-01-14-liberia-battles-crippling-shortage-in-health-workers