APA (7th ed.) Citation

Sage, M. M. (2020). Septimius Severus and the Roman army. Pen & Sword Military.

Chicago Style (17th ed.) Citation

Sage, Michael M. Septimius Severus and the Roman Army. Barnsley, South Yorkshire, UK: Pen & Sword Military, 2020.

MLA (9th ed.) Citation

Sage, Michael M. Septimius Severus and the Roman Army. Pen & Sword Military, 2020.