World Bank, Banerjee, S. G., & Morella, E. (2011). Africa's water and sanitation infrastructure: Access, affordability, and alternatives. World Bank.
Chicago (17e ed.) BronvermeldingWorld Bank, Sudeshna Ghosh Banerjee, en Elvira Morella. Africa's Water and Sanitation Infrastructure: Access, Affordability, and Alternatives. Washington, D.C.: World Bank, 2011.
MLA (9e ed.) BronvermeldingWorld Bank, et al. Africa's Water and Sanitation Infrastructure: Access, Affordability, and Alternatives. World Bank, 2011.