1. Bowden, M. The Finish: The Killing of Osama Bin Laden. New York: Atlantic Monthly Press, 2012.
2. Bush, G. W. Decision Points. New York: Crown Publishers, 2010.
3. CNN. “The Axe Files.” In Podcast Ep. War and Chance: Assessing Uncertainty in International PoliticsVol. 247. Friedman, Jeffrey A., eds. Oxford: Oxford University Press. 2019, (31 May 2018).
4. Director of Central Intelligence. “Assessed Manpower of Warsaw Pact Forces in the NATO Guidelines Area 1985.” NI IIM 86-10005. Declassified from SECRET . https://www.cia.gov/readingroom/docs/CIA-RDP90R00038R000200210001-0.pdf
5. Director of National Intelligence. Intelligence Community Directive (ICD) 203 Analytic Standards . 2 January 2015. https://www.dni.gov/files/documents/ICD/ICD%20203%20Analytic%20Standards.pdf