| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1960 |
|
Galaxy Magazine, October 1960 | Galaxy Publishing Corporation | MAGAZINE | 79 |
| October 1960 |
|
Galaxy Magazine, October 1960 | Strato Publications | MAGAZINE | 79 |
| April 2016 | The Imitation of Earth | Project Gutenberg | Chapbook |