| English | eng-000 |
| Chesu | |
| ISO 639-3 | art-001 | ych |
| ISO 639-PanLex | art-274 | ych-000 |
| ISO 639-3 Inverted Names | art-291 | Chesu |
| Glottolog Languoid Names | art-326 | Chesu |
| Glottocode | art-327 | ches1238 |
| Glottolog Primary Key | art-328 | 27625 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 2444 |
| français | fra-000 | chesu |
| español | spa-000 | chesu |