Bernard & Graefe · Conway Maritime Press Ltd · US Naval Institute Press
| title | ISBN-13 | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| The Type XXI U-boat | 978-0-85177-922-5 | 2002 | Fritz Kohl | |
| The U-boat: The Evolution and Technical History of German Submarines | 978-0-304-36120-5 | 2001 | ||
| The U-Boat: The Evolution and Technical History of German Submarines | 978-0-87021-966-5 | 1982 | ||
| Type XXI U-Boat | 978-1-59114-887-6 | 2002 | Fritz Kohl | |
| U-Boottyp XXI | 978-3-7637-5223-2 | 1980 | ||