| Deutsch | deu-000 |
| Sprachtheorie | |
| English | eng-000 | linguistic theory |
| English | eng-000 | theory of language |
| français | fra-000 | theorie du langage |
| français | fra-000 | theorie linguistique |
| Kurmancî | kmr-000 | bîrdoza ziman |
| русский | rus-000 | лингвистическая теория |
| russkij | rus-001 | lingwistitschjeskaja tjeorija |
| español | spa-000 | teorías sobre el lenguaje |