Archdeacon George (fl. 715), as transferred to Severus of Muqaffa; B. Evetts (1904). "Benjamin I". History of the Patriarchs of the Coptic church of Alexandria. Diarsipkan dari versi asli tanggal 2015-09-14. Diakses tanggal 2022-08-16. On George's authorship of Lives 27-42:Robert G. Hoyland (1998). Seeing Islam As Others Saw It. Darwin Press. hlm. 447.
Hadith 2683 Sunan Abu-Dawud Transl. Professor Ahmad Hasan (hadith 2677 in Hasan's translation)
Archdeacon George (fl. 715), as transferred to Severus of Muqaffa; B. Evetts (1904). "Benjamin I". History of the Patriarchs of the Coptic church of Alexandria. Diarsipkan dari versi asli tanggal 2015-09-14. Diakses tanggal 2022-08-16. On George's authorship of Lives 27-42:Robert G. Hoyland (1998). Seeing Islam As Others Saw It. Darwin Press. hlm. 447.