APA (7th ed.) Citation

Schmitz, M. (2019). Roman conquests: The Danube frontier. Pen & Sword Military.

Chicago Style (17th ed.) Citation

Schmitz, Michael. Roman Conquests: The Danube Frontier. Barnsley, South Yorkshire, UK: Pen & Sword Military, 2019.

MLA (9th ed.) Citation

Schmitz, Michael. Roman Conquests: The Danube Frontier. Pen & Sword Military, 2019.

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