1. DEFRA (Department for Environment, Food and Rural Affairs). Waste data overview 2011http://www.defra.gov.uk/statistics/files/20110617-waste-data-overview.pdf
2. Environmental Engineering;Peavy,1985
3. Waste Treatment and Disposal;Williams,2005
4. Landfilling of Waste: Leachate;Christensen,1992
5. WCED (World Commission on Environment and Development). Report of the World Commission on Environment and Development: Our Common Futurehttp://www.un-documents.net/wced-ocf.htm