| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1951 |
|
The Alien | World Editions, Inc. | Novel | |
| April 1959 |
|
Das Erbe der Hölle | Moewig | Novel | |
| September 1966 |
|
The Alien | Belmont Books | Novel | 7 |
| September 1966 |
|
The Alien | Belmont Books | Novel | 7 |
| April 1976 |
|
Il signore dell'universo | Libra Editrice | Novel | 13 |
| 1977 |
|
The Alien | Leisure Books | Novel | |
| January 2008 |
|
The Alien | Wildside Press | Novel | |
| January 2008 |
|
The Alien | Wildside Press | Novel | |
| January 2012 |
|
The Star Hunter / The Alien | Armchair Fiction | Omnibus | |
| November 2012 |
|
The Alien | Gateway / Orion | Novel | |
| December 2015 | The Alien | Project Gutenberg | Novel | ||
| January 2016 |
|
The 11th Science Fiction Megapack | Wildside Press | Anthology | |
| October 2017 |
|
The Alien | Serapis Classics | Novel | |
| December 2017 |
|
The Alien | Jovian Press | Novel | |
| January 2018 |
|
The Alien | Novel | ||
| March 2018 |
|
The Alien | Ozymandias Press | Novel | |
| March 2020 |
|
The Alien | Otbebookpublishing | Novel | |
| August 2021 |
|
The Alien | Alpha Editions | Novel | |
| October 2023 |
|
The Alien | Good Press | Novel |