APA (7th ed.) Citation

Swanton, J. (2020). Ancient battle formations. Pen & Sword Military.

Chicago Style (17th ed.) Citation

Swanton, Justin. Ancient Battle Formations. [Place of publication not identified]: Pen & Sword Military, 2020.

MLA (9th ed.) Citation

Swanton, Justin. Ancient Battle Formations. Pen & Sword Military, 2020.