Gäbrä Iyyäsus Kifle, ታሪኽ ትውልዲ ልሳን ግእዝ Tariḵ tǝwlǝddi lǝssan Gǝʿǝz [History of the Origin of the Gǝʿǝz Language – in Tigrinya]. Aethiopica 2003, 6 (1), 263-265. https://doi.org/10.15460/aethiopica.6.1.399.