APA (7th ed.) Citation

Horne, J. (2010). A companion to World War I (1. publ.). Wiley-Blackwell.

Chicago Style (17th ed.) Citation

Horne, John. A Companion to World War I. 1. publ. Chichester: Wiley-Blackwell, 2010.

MLA (9th ed.) Citation

Horne, John. A Companion to World War I. 1. publ. Wiley-Blackwell, 2010.

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