1. Overthrow of the Sokoto Caliphate, 1879–1903’ (Ph.D. Thesis, Ibadan, 1967).
2. The Dilemma of the Wazir: the place of the Risalat al-Wazir ‘ila ahi al-'ilm wa'l-tadabbur in the history of the Sokoto Caliphate;Adeleye;Journal of the Historical Society of Nigeria,1968
3. Hallam W. K. R. , ‘Rabeh the tyrant of Bornu’, Nigeria no. 86 (1965), 163–73,