1. Alex P. Schmid, Political Terrorism: A Research Guide to Concepts, Theories, Data Bases, and Literature, pp. 119–58, cited in Walter Laqueur, The Age of Terrorism (Boston: Little, Brown & Co., 1987), p. 143.
2. Martin Hughes, ‘Terrorism and National Security,’ Philosophy 57 (1982), p. 5.
3. Barrie A. Paskins and M.L. Dockrill, The Ethics of War (London: Duckworth, 1979), p. 89.
4. Grant Wardlaw, Political Terrorism: Theory, Tactics and Counter-Measures (Cambridge: Cambridge University Press, 1982), p. 16.
5. C.A.J Coady, ‘The Morality of Terrorism,’ Philosophy 60 (1985);