APA (7th ed.) Citation

Martel, G. (2017). Origins of the First World War (Fourth edition.). Routledge.

Chicago Style (17th ed.) Citation

Martel, Gordon. Origins of the First World War. Fourth edition. London ; New York: Routledge, 2017.

MLA (9th ed.) Citation

Martel, Gordon. Origins of the First World War. Fourth edition. Routledge, 2017.

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