| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| GRAY WOLF IN THE ATLANTIC: U68 in Combat Off the American Coast | 978-1-932033-41-0 (1-932033-41-6) | 2006 |
| Szary wilk atakuje | 978-83-11-09863-3 (83-11-09863-8) | |
| U-Boot VII C - Technique - Construction - Armement | 978-2-7339-0880-8 (2-7339-0880-4) | 2004 |