1. Abdenur, A., & Gama, C. F. (2015). Triggering the norms cascade: Brazil’s initiatives for curbing electronic espionage. Global Governance, 21(3), 455–474.
2. Agência Brasil (2013, July 9). Grupo interministerial vai investigar monitoramento eletrônico do Brasil pelos EUA. http://memoria.ebc.com.br/agenciabrasil/noticia/2013-07-09/grupo-interministerial-vai-investigar-monitoramento-eletronico-do-brasil-pelos-eua.
3. Amnesty International. (2015, March 18). Global opposition to USA big brother mass surveillance. https://www.amnesty.org/en/latest/news/2015/03/global-opposition-to-usa-big-brother-mass-surveillance/.
4. Baker, L., & Rinke, A. (2013, October 24). Merkel frosty on the U.S. over ‘unacceptable’ spying allegations. Reuters. https://www.reuters.com/article/us-eu-summit-idUSBRE99N0BJ20131024.
5. BBC (2013, September 2). Brazil and Mexico probe claims US spied on presidents. https://www.bbc.com/news/world-latin-america-23938909.