| français | fra-000 |
| Robert Zubrin | |
| Deutsch | deu-000 | Robert Zubrin |
| English | eng-000 | Robert Zubrin |
| 日本語 | jpn-000 | ロバート・ズブリン |
| Nederlands | nld-000 | Robert Zubrin |
| português | por-000 | Robert Zubrin |
| русский | rus-000 | Роберт Зубрин |
| slovenčina | slk-000 | Robert Zubrin |
| español | spa-000 | Robert Zubrin |
| svenska | swe-000 | Robert Zubrin |