| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1968 |
|
The Day the World Stopped | Avalon Books | Novel | |
| April 2007 |
|
A Galaxy Trilogy: Star Ways, Druids' World, and The Day the World Stopped | Blackstone Audiobooks | Omnibus | |3 |
| April 2007 |
|
A Galaxy Trilogy: Star Ways, Druids' World, and The Day the World Stopped | Blackstone Audiobooks | Omnibus | |
| April 2007 |
|
A Galaxy Trilogy: Star Ways, Druids' World, and The Day the World Stopped | Blackstone Audio | Omnibus | |
| June 2008 |
|
The Day the World Stopped | Electronic & Database Publishing | Novel |