APA (7th ed.) Citation

Henig Ruth Beatrice. (2001). The origins of the First World War (3rd ed.). Routledge.

Chicago Style (17th ed.) Citation

Henig Ruth Beatrice. The Origins of the First World War. 3rd ed. London: Routledge, 2001.

MLA (9th ed.) Citation

Henig Ruth Beatrice. The Origins of the First World War. 3rd ed. Routledge, 2001.

Warning: These citations may not always be 100% accurate.