Utomo, Ario Bimo. “The 11 September Attacks and the Fourth Wave 2.0 of International Terrorism”. SHAHIH: Journal of Islamicate Multidisciplinary 4, no. 1 (June 10, 2019): 13–24. Accessed May 12, 2024. https://ejournal.uinsaid.ac.id/index.php/shahih/article/view/1546.