^Barsoum, Ignatius Afram (1987). al-Luʼluʼ al-manthūr fī tārīkh al-ʻulūm wa-al-ādāb al-Suryāniyyah, 4th ed. Holland: Bar Hebraeus Verlag. p. 223.
^Barsoum, Ignatius Afram (2003). The Scattered Pearls: A History of Syriac Literature and Sciences, trans. Matti Moosa, 2nd rev. ed. Piscataway, NJ: Gorgias Press. p. 259.