World Bank. (2013). Africa development indicators 2012/2013. The World Bank.
Citación estilo ChicagoWorld Bank. Africa Development Indicators 2012/2013. Washington, DC: The World Bank, 2013.
Cita MLAWorld Bank. Africa Development Indicators 2012/2013. The World Bank, 2013.
Warning: These citations may not always be 100% accurate.