| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1978 |
|
The Ion War | Ace Books | Novel | |
| November 1978 |
|
The Ion War | Ace Books | Novel | |
| 1980 |
|
The Alien World: The Complete Illustrated Guide | Crescent Books | Nonfiction | 82 |
| 1980 |
|
The Alien World: The Complete Illustrated Guide | Octopus Books | Nonfiction | 82 |
| August 1982 |
|
Commandos Para-Ion | Albin Michel | Novel | |
| February 1984 |
|
Großangriff | Bastei Lübbe | Novel | |
| 1994 |
|
Ken Barr: The Beast Within | Comic Images | Nonfiction | 79 |