APA (7th ed.) Citation

Wynn, S., & Wynn, T. (2020). Fighter aces of the Great War. Pen & Sword Military.

Chicago Style (17th ed.) Citation

Wynn, Stephen, and Tanya Wynn. Fighter Aces of the Great War. Barnsley, South Yorkshire, UK: Pen & Sword Military, 2020.

MLA (9th ed.) Citation

Wynn, Stephen, and Tanya Wynn. Fighter Aces of the Great War. Pen & Sword Military, 2020.