R. V. Reddy, Rao, M. S. Rammohan, y Venkataswamy, M.,
«Slippage: the bane of rural drinking water sector: a study of extent and causes in Andhra Pradesh»,
WASHCost India-CESS working papers, vol. 6. WASHCost and CESS, Hyderabad, p. 30 p.; 8 tab.; 6 fig., 2010.