APA (7th ed.) Citation

Harpur. (2005). The crusades: The two hundred years war. Carlton Books Ltd.

Chicago Style (17th ed.) Citation

Harpur. The Crusades: The Two Hundred Years War. London: Carlton Books Ltd, 2005.

MLA (8th ed.) Citation

Harpur. The Crusades: The Two Hundred Years War. Carlton Books Ltd, 2005.

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