| ISO 639-3 | art-001 |
| efa | |
| ISO 639-3 Reference Names | art-289 | Efai |
| ISO 639-3 Print Names | art-290 | Efai |
| ISO 639-3 Inverted Names | art-291 | Efai |
| Ethnologue Primary Language Names | art-323 | Efai |
| Glottolog Languoid Names | art-326 | Efai |
| Glottocode | art-327 | efai1241 |
| Glottolog Primary Key | art-328 | 32134 |
| Ethnologue Language Names | art-330 | Efai |
| Ethnologue Language Names | art-330 | Effiat |
| English | eng-000 | Efai |