APA (7th ed.) Citation

Crawford, P. (2013). The war of the three gods: Romans, Persians and the rise of Islam (1. published.). Pen & Sword Military.

Chicago Style (17th ed.) Citation

Crawford, Peter. The War of the Three Gods: Romans, Persians and the Rise of Islam. 1. published. Barnsley: Pen & Sword Military, 2013.

MLA (9th ed.) Citation

Crawford, Peter. The War of the Three Gods: Romans, Persians and the Rise of Islam. 1. published. Pen & Sword Military, 2013.