. Government of Kerala (1998), 'Ninth Five Year Plan 1997-2002', Report of the Steering Committee on Water Resources, State Planning Board, June, Thiruvananthapuram, p.2.
. GOK (various years), Economic Review, SPB, Pattom, Thiruvananthapuram.
. Iyer, Ramaswamy, R.(2001), 'Water: Charting a Course for the Future', Economic and Political Weekly, March 31, Bombay, p.1116.
. Shishodia, A. & Singh, K.(2007). Environmental Economics: Theory and Practice.New Delhi,Sage Publications.
. State Planning Board (2009), 'An Evaluation Study on Jalanidhi Projects in Kerala, October, Thiruvananthapuram.
. Vijayakumary M. S, (2002), "An economic evaluation of rural drinking water supply projects in Kerala-A comparative study".
. Varkey, J (2012), Community Management of Water Resources in Kerala: A study of user participation in drinking water schemes.