Mulligan, W. (2017). The origins of the first world war (Second edition.). Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Mulligan, William. The Origins of the First World War. Second edition. Cambridge, United Kingdom ; New York, NY: Cambridge University Press, 2017.
Lua MLA (8ú heag.)Mulligan, William. The Origins of the First World War. Second edition. Cambridge University Press, 2017.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.