Baylis, J, & Smith, S. (2005), The Globalization of World Politics, An Introduction to International Relation (the Second edition Ed), Oxford University Press.
Bell, Wendell. (2003), Foundation of Futures Studies: History, Purposes, and Knowledge (Human Science for New Era), London: Transaction Publishers.
Laqueur, W. (2018), the Future of Terrorism: ISIS, Al-Qaeda, and the Alt-Right, Publisher: Thomas Dunne Books.
Lia, B. (2005), Globalisation and the Future of Terrorism: Patterns and Predictions, Routledge.
Linstone, H.A. & Turoff, M., (1975), (digital version: 2002), "Introduction", the Delphi Method: Techniques and Applications, Publisher: Addison-Wesley Pub. Co., Advanced Book Program.
Mannik, E. (2011), »Terrorism: Its Past, Present and Future Prospects«, Journal:
KVÜÕA toimetised.