The World Bank. (2006). Africa development indicators 2006. Washington, D.C: The World Bank.
Chicago Style CitationThe World Bank. Africa Development Indicators 2006. Washington, D.C: The World Bank, 2006.
Cita MLAThe World Bank. Africa Development Indicators 2006. Washington, D.C: The World Bank, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.