Best, Anthony et al. (2008) International History of the Twentieth Century and Beyond. Oxon, Routledge.
Booth, Ken and Dunne, Tim (eds) (2002) Worlds in Collision: Terror and the Future of the Global Order. Hampshire, Palgrave.
Chatfield, Charles and DeBenedetti, Charles (1990) An American Ordeal: the antiwar movement of the Vietnam Era. Syracuse, Syracuse University Press.
Cowley, Robert and Parker, Geoffrey (1996) The Reader's Companion to Military History. New York, Houghton Mifflin.