| English | eng-000 |
| Isu | |
| ISO 639-3 | art-001 | isu |
| ISO 639-3 | art-001 | szv |
| ISO 639-3 Inverted Names | art-291 | Isu (Fako Division) |
| ISO 639-3 Inverted Names | art-291 | Isu (Menchum Division) |
| Glottolog Languoid Names | art-326 | Isu (Fako Division) |
| Glottocode | art-327 | isuf1235 |
| Glottolog Primary Key | art-328 | 29886 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 34 |
| français | fra-000 | isu |
| español | spa-000 | isu |