SS Nerissa. www.ssnerissa.com [online]. [cit. 2020-12-12]. Dostupné online.
uboat.net
Korvettenkapitän Herbert Schultze - German U-boat Commanders of WWII - The Men of the Kriegsmarine - uboat.net. uboat.net [online]. [cit. 2019-09-16]. Dostupné online.
Patrol of German U-boat U-48 from 19 Aug 1939 to 17 Sep 1939 - Kriegsmarine U-boat patrols - uboat.net. www.uboat.net [online]. [cit. 2020-12-11]. Dostupné online.
Patrol of German U-boat U-48 from 4 Oct 1939 to 25 Oct 1939 - Kriegsmarine U-boat patrols - uboat.net. uboat.net [online]. [cit. 2020-12-11]. Dostupné online.
Ships hit by U-48 - U-boat Successes - German U-boats - uboat.net. www.uboat.net [online]. [cit. 2020-12-11]. Dostupné online.
Patrol of German U-boat U-48 from 4 Oct 1939 to 25 Oct 1939 - Kriegsmarine U-boat patrols - uboat.net. www.uboat.net [online]. [cit. 2020-12-11]. Dostupné online.
Patrol of German U-boat U-48 from 20 Nov 1939 to 20 Dec 1939 - Kriegsmarine U-boat patrols - uboat.net. www.uboat.net [online]. [cit. 2020-12-11]. Dostupné online.
Patrol of German U-boat U-48 from 24 Jan 1940 to 26 Feb 1940 - Kriegsmarine U-boat patrols - uboat.net. www.uboat.net [online]. [cit. 2020-12-11]. Dostupné online.
Patrol info for U-48 (. www.uboat.net [online]. [cit. 2020-12-11]. Dostupné online.
Patrol of German U-boat U-48 from 26 May 1940 to 29 Jun 1940 - Kriegsmarine U-boat patrols - uboat.net. www.uboat.net [online]. [cit. 2020-12-11]. Dostupné online.
Patrol of German U-boat U-48 from 7 Aug 1940 to 28 Aug 1940 - Kriegsmarine U-boat patrols - uboat.net. www.uboat.net [online]. [cit. 2020-12-11]. Dostupné online.
Patrol of German U-boat U-48 from 8 Sep 1940 to 25 Sep 1940 - Kriegsmarine U-boat patrols - uboat.net. www.uboat.net [online]. [cit. 2020-12-11]. Dostupné online.
Patrol of German U-boat U-48 from 5 Oct 1940 to 27 Oct 1940 - Kriegsmarine U-boat patrols - uboat.net. www.uboat.net [online]. [cit. 2020-12-12]. Dostupné online.
Patrol of German U-boat U-48 from 20 Jan 1941 to 27 Feb 1941 - Kriegsmarine U-boat patrols - uboat.net. www.uboat.net [online]. [cit. 2020-12-12]. Dostupné online.
Patrol of German U-boat U-48 from 17 Mar 1941 to 8 Apr 1941 - Kriegsmarine U-boat patrols - uboat.net. www.uboat.net [online]. [cit. 2020-12-12]. Dostupné online.
Patrol of German U-boat U-48 from 22 May 1941 to 17 Jun 1941 - Kriegsmarine U-boat patrols - uboat.net. www.uboat.net [online]. [cit. 2020-12-11]. Dostupné online.
war-experience.org
Voices from the Battle of the Atlantic by Kate Tildesley. The Second World War Experience Centre - Battle of the Atlantic. web.archive.org [online]. 2011-07-17 [cit. 2019-09-16]. Dostupné v archivu pořízeném z originálu.
web.archive.org
Voices from the Battle of the Atlantic by Kate Tildesley. The Second World War Experience Centre - Battle of the Atlantic. web.archive.org [online]. 2011-07-17 [cit. 2019-09-16]. Dostupné v archivu pořízeném z originálu.
worldcat.org
GRÖNER, Erich. German warships 1815-1945. Překlad Thomas, Keith; Magowan, Rachel. Londýn: Conway Maritime Press, 1991. [256] pages s. ISBN0851775934, ISBN9780851775937. OCLC24695694 S. 43–44.
BUSCH, Rainer; RÖLL, Hans-Joachim. Der U-Boot-Krieg, 1939-1945. Hamburg: Mittler & Sohn, 2001. 5 volumes s. ISBN3813205096, ISBN9783813205091. OCLC36052790 S. 44–46. (německy)