1. Ahmed, Nafeez (2014): “Iraq invasion was about oil”, The Guardian, 20 March. Disponible en: https://www.theguardian.com/environment/earth-insight/2014/mar/20/iraq-war-oilresources- energy-peak-scarcity-economy [Consulta: 4 de septiembre de 2017]
2. Brzezinski, Zbigniew (1983): Power and Principle. Memoirs of the National Security Adviser, 1977-1981, New York: Farrar, Straus & Giroux.
3. Bush, George W. (2001): Address Before a Joint Session of the Congress on the United States Response to the Terrorist Attacks of September 11, September 20. Disponible en: http://www.presidency.ucsb.edu/ws/index.php?pid=64731 [Consulta: 13 de septiembre de 2017]
4. Bush, George W. (2003): Address to the Nation on Iraq, March 19. Disponible en: http://www.presidency.ucsb.edu/ws/index.php?pid=63368 [Consulta 14 de septiembre de 2017]
5. Carter, Jimmy (1980): The State of the Union Address Delivered Before a Joint Session of the Congress, January 23. Disponible en: http://www.presidency.ucsb.edu/ws/?pid=33079 [Consulta 9 de septiembre de 2017]