Roggema, Barbara. "Baḥīrā." Encyclopaedia of Islam, THREE. Edited by: Gudrun Krämer, Denis Matringe, John Nawas, Everett Rowson. Brill Online, 2014 [2011]. Accessed July 12, 2014.
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St. John of Damascus's Critique of Islam; from Writings, by St John of Damascus (De Haeresibus, chap. 101), The Fathers of the Church vol. 37 (Washington, DC, Catholic University of America Press, 1958), pp. 153-160.