"ORIGIN Interview: Mark Ruffalo on Climate Change, the Monopoly on Our Energy Systems, Fighting Fracking, the True Cost of Fossil Fuel Pollution, Showing Compassion, and Being Who You Say You Are". Interview with Leilani Münter, www.marandapleasantmedia.com. April 27, 2016.
Benjamin Franklin, William-Temple Franklin (1818). “Memoirs of the Life and Writings of (the Same), Continued to the Time of His Death by William Temple Franklin. - London, H. Colburn 1818”, p.270