1. Anon, 2007. The Truth about Recycling. The Economist, June 9, pp. 22–26.
2. Environmental Management: Principles and Practice;Barrow,1999
3. Navigating the Numbers: Green House Gas Data and International Climate Policy;Baumert,2005
4. Creating institutions to ensure sustainable use of resources;Brunckhorst;Habitat International,1998
5. CAIT US, 2007. Climate Analysis Indicators Tool, Version 2.0. World Resources Institute, Washington, DC, USA.