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Cremer, Peter. U-Boat Commander: A Periscope View of the Battle of the Atlantic. 1984. ISBN 0-87021-969-3.

Davidson, Eugene. The Trial of the Germans: Account of the Twenty-two Defendants Before the International Military Tribunal at Nuremberg. 1997. ISBN 0-8262-1139-9

Hadley, Michael L. U-Boats Against Canada: German Submarines in Canadian Waters. McGill-Queen's University Press: 1985. ISBN 0-7735-0801-5.

Macintyre, Donald. U-boat Killer. 1999. ISBN 0-304-35235-7

Thompson, H.K. & Henry Strutz. Doenitz at Nuremberg, a reappraisal: War crimes and the military professional. Amber Pub. Corp. 1976.

Werner, Herbert A. Iron Coffins: A U-boat Commander's War, 1939–45. 1999. ISBN 0-304-35330-2

Prien, Gunther. Fortunes of War: U-boat Commander. 2000. ISBN 0-7524-2025-9

Herwig, Holger H. Innovation ignored: The Submarine problem in Murray, Williamson and Millet Allan R. ed. "Military Innovation in the Interwar Period". Cambridge University Press 1998

Failure to Learn: American Anti-submarine Warfare in 1942 in Cohen, Eliot A. and Gooch, John. Military Misfortunes Vintage Books 1991