APA-referens (7:e uppl.)

Mulligan, W. (2017). The origins of the first world war (Second edition.). Cambridge University Press.

Chicago-referens (17:e uppl.)

Mulligan, William. The Origins of the First World War. Second edition. Cambridge, United Kingdom ; New York, NY: Cambridge University Press, 2017.

MLA-referens (8:e uppl.)

Mulligan, William. The Origins of the First World War. Second edition. Cambridge University Press, 2017.