Ferguson, N. (2006). The war of the world: Twentieth-century conflict and the descent of the west. Penguin Books.
Chicago-referens (17:e uppl.)Ferguson, Niall. The War of the World: Twentieth-century Conflict and the Descent of the West. New York: Penguin Books, 2006.
MLA-referens (9:e uppl.)Ferguson, Niall. The War of the World: Twentieth-century Conflict and the Descent of the West. Penguin Books, 2006.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.