APA (7th ed.) Citation

Messenger, C. (2009). Wars that changed the world. Quercus.

Chicago Style (17th ed.) Citation

Messenger, Charles. Wars That Changed the World. London: Quercus, 2009.

MLA (9th ed.) Citation

Messenger, Charles. Wars That Changed the World. Quercus, 2009.

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