APA (7th ed.) Citation

Keeble, P., & Gledhill, D. (2019). Per ardua: Training an RAF phantom crew. Fonthill.

Chicago Style (17th ed.) Citation

Keeble, Philip, and David Gledhill. Per Ardua: Training an RAF Phantom Crew. [England?]: Fonthill, 2019.

MLA (9th ed.) Citation

Keeble, Philip, and David Gledhill. Per Ardua: Training an RAF Phantom Crew. Fonthill, 2019.