1. Geoffrey Supran & Naomi Oreskes, Assessing ExxonMobil's climate change communications;Geoffrey Supran;What Exxon Mobil Didn't Say About Climate Change,1977
2. How Exxon Used the New York Times to Make You Question Climate Science;Connor Gibson;GREENPEACE,2017
3. Deeper Ties to Corporate Cash for Doubtful Climate Researcher;Justin Gillis;N.Y. TIMES,2015
4. Climate sceptics -who gets paid what?;Leo Hickman;THE GUARDIAN,2012