| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| August 1978 |
|
Captive Scorpio | DAW Books | Novel | 9 |
| August 1978 |
|
Captive Scorpio | DAW Books / New American Library of Canada | Novel | 9 |
| April 2007 |
|
Captive Scorpio | Mushroom eBooks | Novel | |
| May 2007 |
|
Captive Scorpio | Mushroom eBooks | Novel | |
| April 2009 |
|
The Vallian Cycle | Bladud Books | Omnibus | 305 |
| April 2009 |
|
The Vallian Cycle | Bladud Books | Omnibus | 305 |
| January 2011 |
|
The Vallian Cycle | Mushroom eBooks | Omnibus | |305 |