Suleiman, O., and E. Akhmetova. “The Expanded Usul of Violence by ISIS, Al-Qaeda, and Other Similar Extremist Groups”. Islam and Civilisational Renewal </Br> ICR Journal, vol. 11, no. 1, June 2020, pp. 60-74, https://icrjournal.org/index.php/icr/article/view/821.