Bunzel, Cole. 2023. Wahhābism: The History of a Militant Islamic Movement. Princeton, NJ: Princeton University Press. Reference Link
Bunzel, Cole. 2015. From Paper State to Caliphate: The Ideology of the Islamic State. The Brookings Project on U.S. Relations With the Islamic World. Analysis Paper. Washington, D.C.: Brookings Institution. Referenced from www.brookings.edu: From Paper State to Caliphate: The Ideology of the Islamic State. Reference Link