1. Adam , David 2009 ExxonMobil Continuing to Fund Climate Sceptic Groups, Records Show , The Guardian , 1 July,http://www.guardian.co.uk/environment/2009/jul/01/exxon-mobil-climate-change-sceptics-funding, accessed 29 January 2011 .
2. Expert credibility in climate change
3. Climate of scepticism: US newspaper coverage of the science of climate change
4. Self-censorship and science: a geographical review of media coverage of climate tipping points