APA (7th ed.) Citation

Gill. (2003). Blood in the sea: HMS Dunedin and the Enigma Code. Weidenfeld & Nicolson.

Chicago Style (17th ed.) Citation

Gill. Blood in the Sea: HMS Dunedin and the Enigma Code. London: Weidenfeld & Nicolson, 2003.

MLA (8th ed.) Citation

Gill. Blood in the Sea: HMS Dunedin and the Enigma Code. Weidenfeld & Nicolson, 2003.

Warning: These citations may not always be 100% accurate.