1. Baagil, H. M., 1984, Muslim-Christian Dialogue, WAMY studies on Islam.
2. Benjamin, D. D., 2005, The Patriarchs of the church of the East, Trans. Youel: A. Baaba, United State of America,
3. Ben Sasson, , H. H., 2007, “Disputations and Polemics”, Encyclopedia Judaica, ed. Fred Skolni, Keter Pub., Jerusalem.
4. Bertaina, D., 2007, “The development of Testimony collections in Early Christian Apologetics with Islam’, The Bible in Arab Christianity, ed. D. Thomas, Brill, Boston.
5. “Omar, Covenant of”, 2007, Encyclopedia Judaica, v. 15, ed. Fred Skolnik, Keter Pub., Jerusalem.
6. Duri, A. A., “Dayr AL-Djathalik”, EI2. v. 2, Brill, Leiden.
7. Ben Sasson, H. H., 2007, “Disputations and Polemics”, Encyclopedia Judaica, ed. Fred Skolnik, Keter Pub., Jerusalem.
8. Ben Sasson, H. H., 1976, “The Middle ages”, A History of the Jewish People, Harvard University Press.
9. Garsiel, B., 2011, "The Qur'an Deception of Abraham in the Light of Hebrew Bible and Midrash", The Convergence of Judaism and Islam: Religious, Scientific, and Cultural Dimensions, University Press of Florida.
10. Griffith, H, 2011, “Disputes with Muslims in Syriac Christian Texts from Patriarch John (d. 648)to Bar Hebraous (d. 1286)”, Doctrine and Debates in the East Christian World, Rutledge, London.
11. Gorgias Encyclopedic Dictionary of the Syriac Heritage: Electronic Edition, “List of Patriarchs.”
12. Mingan, A., 1928, The apology of Timothy the patriarch before the Caliph Mahdi, Wood Brooke Studies, Cambridge.
13. Neusner, J., 1968, History of the Jews in Babylonia, Brill Pub. Leiden.
14. Platt, A, & Gibson, N., 2018, “Inquiring of Beelzebub; Timothy and AL-Jahiz on Christian in Abbasid Legal system”, in Heirs of the Apostles, ed. D. Bertaina, Brill, leiden.
15. Samir. K. S., 2001, “The Prophet Muhammad as seen by Timothy I and Other Arab Christian Authors”, Syrian Christians under Islam, ed. D. Thomas, Brill, Leiden.
16. Sherbok, D., 2003, Judaism, History, Belief and Practice, Rutledge, London.
17. Swanson, M. N., 2003, “The Christian Al-Ma’mun Tradition”, Christians at the Heart of Islamic Rule, ed. D. Thomas, Brill, Leiden.
18. Thomas of Margᾱ, 1893, The Book of Governers, ed. E.A. Willis Budbe, v.2, keganpaul, Trench, Trubner & co., London.
19. Mar Aprem, 1976, the Nestorian Fathers, Trichur, Kerala.
20. Vine, A. R., 1937, the Nestorian Churches, Independent Press, London.