Banerjee et al. 2009, p. 66. Banerjee, Sudeshna; Skilling, Heather; Foster, Vivien; Briceño-Garmendia, Cecilia; Morella, Elvira; Chfadi, Tarik (2009). Ebbing Water, Surging Deficits: Urban Water Supply in Sub-Saharan Africa(PDF). Africa Infrastructure Country Diagnostic, Background Paper. Vol. 12. Washington, DC: The International Bank for Reconstruction and Development / The World Bank.
Banerjee et al. 2009, p. 56. Banerjee, Sudeshna; Skilling, Heather; Foster, Vivien; Briceño-Garmendia, Cecilia; Morella, Elvira; Chfadi, Tarik (2009). Ebbing Water, Surging Deficits: Urban Water Supply in Sub-Saharan Africa(PDF). Africa Infrastructure Country Diagnostic, Background Paper. Vol. 12. Washington, DC: The International Bank for Reconstruction and Development / The World Bank.
Banerjee et al. 2009, pp. 60–61. Banerjee, Sudeshna; Skilling, Heather; Foster, Vivien; Briceño-Garmendia, Cecilia; Morella, Elvira; Chfadi, Tarik (2009). Ebbing Water, Surging Deficits: Urban Water Supply in Sub-Saharan Africa(PDF). Africa Infrastructure Country Diagnostic, Background Paper. Vol. 12. Washington, DC: The International Bank for Reconstruction and Development / The World Bank.