Ferguson, N. (2006). The war of the world: Twentieth-century conflict and the descent of the West. Penguin Press.

Ferguson, Niall. The War of the World: Twentieth-century Conflict and the Descent of the West. New York: Penguin Press, 2006.

Ferguson, Niall. The War of the World: Twentieth-century Conflict and the Descent of the West. Penguin Press, 2006.