APA (7th ed.) Citation

Williams, H. (2010). Emperor of the West (1. publ. in Great Britain.). Quercus.

Chicago Style (17th ed.) Citation

Williams, Hywel. Emperor of the West. 1. publ. in Great Britain. London: Quercus, 2010.

MLA (9th ed.) Citation

Williams, Hywel. Emperor of the West. 1. publ. in Great Britain. Quercus, 2010.