Siegbert Uhlig, Encyclopaedia Aethiopica: He-N, Volume 3, Otto Harrassowitz Verlag, , 1034 p. (ISBN344705607X, lire en ligne)
Translated by Paul Stenhouse, Richard Pankhurst Shihāb al-Dīn Aḥmad ibn ʻAbd al-Qādir ʻArabfaqīh, The conquest of Abyssinia: 16th century, Tsehai Publishers & Distributors, , 77 p. (lire en ligne)
Ioan M Lewis, A Pastoral Democracy: A Study of Pastoralism and Politics Among the Northern Somali of the Horn of Africa, James Currey Publishers, (lire en ligne), p. 12
islhornafr.eu
Sara Fani, IslHornAfr 6thField Mission Report, University of Copenhagen, (lire en ligne), p. 19
Jeylan Hussein, Sociocognitive Processes in the Construction of Identity and Conflict between the Jarso and Girhi in Eastern Ethiopia, Indiana University Press (lire en ligne), p. 94
Lewis, « Clanship and Contract in Northern Somaliland », Africa: Journal of the International African Institute, vol. 29, no 3, , p. 274 (lire en ligne, consulté le )