Assembleia Nacional São Tomé and Príncipe. <http://www.parlamento.st>. Accessed August 2001.
Economist Intelligence Unit. Country Profile: São Tomé and Príncipe. London: Economist Intelligence Unit, 2000.
Hodges, T., and M. Newitt. São Tomé and Príncipe: From Plantation Colony to Microstate. Boulder: Westview Press, 1998.
International Financial Statistics Yearbook, 1999. Washington, D.C.: International Monetary Fund, 2000.
Siebert, Gerhard. Comrades, Clients and Cousins: Colonialism, Socialism and Democratization in São Tomé and Príncipe. Leiden, the Netherlands: Leiden University, 1999.
U.S. Department of State. Background Notes: São Tomé and Príncipe, March 1997.
<http://www.state.gov/www/background_notes/sao_tome_0397_bgn.html>. Accessed August 2001.