| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| May 1963 |
|
If, May 1963 | Digest Productions Corporation | MAGAZINE | 7 |
| July 1964 |
|
Urania #340 | Mondadori | MAGAZINE | 59 |
| June 1970 |
|
Galaxie, Juin 1970 | OPTA | MAGAZINE | 84 |
| April 2012 |
|
The Moon Is Hell! / The Green World | Armchair Fiction | Omnibus | |
| February 2020 |
|
The Green World | Project Gutenberg | Chapbook |