| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1973 |
|
Urania #629 | Mondadori | MAGAZINE | 33 |
| March 1979 |
|
Asimov Story | Mondadori | Collection | 316 |
| May 1987 |
|
Asimov Story | Mondadori | Collection | 316 |