| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1973 |
|
The Suns of Scorpio | DAW Books | Novel | 9 |
| April 1973 |
|
The Suns of Scorpio | DAW Books / New American Library of Canada | Novel | 9 |
| 1974 |
|
The Suns of Scorpio | Orbit / Futura | Novel | 13 |
| August 1975 |
|
The Suns of Scorpio | DAW Books | Novel | |
| November 2005 |
|
The Suns of Scorpio | Mushroom eBooks | Novel | |
| 2007 |
|
The Delian Cycle | Bladud Books | Omnibus | 121 |
| April 2007 |
|
The Delian Cycle | Bladud Books | Omnibus | 125 |
| August 2009 |
|
The Delian Cycle | Mushroom eBooks | Omnibus | 125 |
| August 2009 |
|
The Delian Cycle | Mushroom eBooks | Omnibus | |2 |