APA (7th ed.) Citation

Kavanagh, M. (2020). Hitler's spies: Lena and the prelude to Operation Sealion. Pen & Sword Military.

Chicago Style (17th ed.) Citation

Kavanagh, Mel. Hitler's Spies: Lena and the Prelude to Operation Sealion. Barnsley, South Yorkshire, UK: Pen & Sword Military, 2020.

MLA (9th ed.) Citation

Kavanagh, Mel. Hitler's Spies: Lena and the Prelude to Operation Sealion. Pen & Sword Military, 2020.