APA (7th ed.) Citation

Lewis, B. (1975). The origins of Ismā'ilism: [a study of the historical background of the Fāṭimid Caliphate] (Repr. of the 1940 ed.). AMS Press.

Chicago Style (17th ed.) Citation

Lewis, Bernard. The Origins of Ismā'ilism: [a Study of the Historical Background of the Fāṭimid Caliphate]. Repr. of the 1940 ed. New York: AMS Press, 1975.

MLA (9th ed.) Citation

Lewis, Bernard. The Origins of Ismā'ilism: [a Study of the Historical Background of the Fāṭimid Caliphate]. Repr. of the 1940 ed. AMS Press, 1975.