1. Al-Kindi, Apologia del cristianesimo, trans. L. Bottini, Milano 1998.
2. Apology of Al Kindy Written at the Court of Al Mamun in Defence of Christianity against Islam, trans. et ed. W. Muir, London 1882.
3. The Early Christian-Muslim Dialogue. A Collection of Documents from the First Three Islamic Centuries (632–900 A.D.), trans. N.A. Newman, Hatfield 1993.
4. Hackenburg C., An Arabic-to-English Translation of the Religious Debate between the Nestorian Patriarch Timothy I and the ‘Abbasid Caliph al-Mahdi (MA Thesis, The Ohio State University 2009).
5. Hoyland R., Seeing Islam as Other Saw It. A Survey and Evaluation of Christian, Jewish and Zoroastrian Writings on Early Islam, Princeton–New Jersey 1997.