1. User representations: practices, methods and sociology;Akrich,1995
2. Reproduction in education;Bourdieu,1990
3. District Official Poverty Lines, Colombo;Department for Census and Statistics, Ministry of Finance and Planning Sri Lanka,2011
4. Poverty in Sri Lanka based on household income and expenditure survey—2006/07, Colombo;Department for Census and Statistics, Ministry of Finance and Planning Sri Lanka,2009
5. Percentage of employed population by district and major groups of industry, Colombo;Department for Census and Statistics, Ministry of Finance and Planning Sri Lanka,2001