Ferguson, N. (2006). The war of the world: Twentieth-century conflict and the descent of the west. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Ferguson, Niall. The War of the World: Twentieth-century Conflict and the Descent of the West. New York: Penguin Books, 2006.
Lua MLA (9ú heag.)Ferguson, Niall. The War of the World: Twentieth-century Conflict and the Descent of the West. Penguin Books, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.