| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| January 1976 |
|
The Triune Man | Berkley/Putnam | Novel | |
| April 1977 |
|
The Triune Man | Berkley Medallion | Novel | |
| 1979 |
|
Space Wars: Worlds and Weapons | Octopus Books | Nonfiction | 1 |
| February 1979 |
|
Stärker als die Zeit | Heyne | Novel | |
| March 1979 |
|
Future Life, March 1979 | Future Life Magazine | MAGAZINE | 60 |
| June 1979 |
|
Space Wars: Worlds and Weapons | Crescent Books | Nonfiction | 1 |
| 1980 |
|
Space Wars: Worlds and Weapons | Octopus Books | Nonfiction | 1 |
| May 1986 |
|
La prova del fuoco | Editrice Nord | Novel |