E. M. Parker, R. J. Hayward (1985) “bàrri”, inAn Afar-English-French dictionary (with Grammatical Notes in English), University of London,→ISBN
Mohamed Hassan Kamil (2015)L’afar: description grammaticale d’une langue couchitique (Djibouti, Erythrée et Ethiopie)[1], Paris: Université Sorbonne Paris Cité (doctoral thesis)