Sulaiman, I. (1987). The Islamic State and the Challenge of History: Ideals, Policies and Operation of the Sokoto Caliphate. Mansell Publishing Limited.
Citazione stile Chigago Style (17a edizione)Sulaiman, Ibraheem. The Islamic State and the Challenge of History: Ideals, Policies and Operation of the Sokoto Caliphate. London and New York: Mansell Publishing Limited, 1987.
Citatione MLA (9a ed.)Sulaiman, Ibraheem. The Islamic State and the Challenge of History: Ideals, Policies and Operation of the Sokoto Caliphate. Mansell Publishing Limited, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.