Trimingham, J. Spencer (13 de septiembre de 2013). Islam in Ethiopia(en inglés). Routledge. pp. 72-73. ISBN978-1-136-97022-1. «The Muslim Kingdoms in Abyssinia were seven in number: Awfat, Dawaro, Arababni, Hadiya, Sharkha, Bali and Dara. These kingdoms which belong to seven kings.»
Niane, Djibril Tamsir; Africa, Unesco International Scientific Committee for the Drafting of a General History of (1 de enero de 1984). Africa from the Twelfth to the Sixteenth Century(en inglés). UNESCO. ISBN978-92-3-101710-0. «Their main achievements were to reduce the great Muslim principalities of Ifat, Dawaro, Sharkha and Bali to stricter tributary status.»