| español | spa-000 |
| Ovide Decroly | |
| català | cat-000 | Ovide Decroly |
| English | eng-000 | Ovide Decroly |
| euskara | eus-000 | Ovide Decroly |
| français | fra-000 | Ovide Decroly |
| italiano | ita-000 | Ovide Decroly |
| Nederlands | nld-000 | Ovide Decroly |
| polski | pol-000 | Owidiusz Decroly |
| português | por-000 | Jean-Ovide Decroly |