Jeremy Rifkin (2014). “The Zero Marginal Cost Society: The Internet of Things, the Collaborative Commons, and the Eclipse of Capitalism”, p.14, Palgrave Macmillan
"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.