Martine Vanhove, The Beja Language Today in Sudan: The State of the Art in Linguistics (em inglês) Proceedings of the 7th International Sudan Studies Conference April 6th - 8th 2006. Bergen, Norway, 2006, Bergen, Norway. University of Bergen.
Olson, James Stuart (1996). The Peoples of Africa:. An Ethnohistorical Dictionary (em inglês). [S.l.]: Greenwood Publishing Group, p. 100. ISBN9780313279188
Hatke, George. «Aksum and Nubia:». Warfare, Commerce, and Political Fictions in Ancient Northeast Africa. Institute for the Study of the Ancient World (em inglês). New York University. Consultado em 1 março 2019