2020-10-12T13:05:57.3230000Z
https://www.termdat.bk.admin.ch/entry/133811
New Oxford Dictionary of English, 1998, "trilingual"
Duden, "dreisprachig" ([Internet, 2020-08-19](https://www.duden.de/rechtschreibung/dreisprachig))
Le Grand Robert de la langue française, "trilingue" ([Internet, 2020-10-12](https://grandrobert.lerobert.com/))
Treccani, Vocabolario, "trilingue" ([Internet, 2020-08-12](http://www.treccani.it/vocabolario/trilingue/))