| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1973 |
|
The Comic Inferno | New English Library | Collection | |
| January 1977 |
|
Galassia, #223 | Casa Editrice La Tribuna | MAGAZINE | |
| June 1992 |
|
Ultraterranium | Paper Tiger / Dragon's World | Nonfiction | 36 |
| June 1997 |
|
Il grande pianeta | Fanucci Editore | Omnibus |