APA (7th ed.) Citation

O'Hara. (2004). The German fleet at war, 1939-1945. Naval Institute Press.

Chicago Style (17th ed.) Citation

O'Hara. The German Fleet at War, 1939-1945. Annapolis, Md: Naval Institute Press, 2004.

MLA (8th ed.) Citation

O'Hara. The German Fleet at War, 1939-1945. Naval Institute Press, 2004.

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