Thomas A. Carlson (ed.), "Mar Sābā" in last modified January 14, 2014, http://syriaca.org/place/1231 Mar Sābā Mār Sābā http://syriaca.org/place/1231 David Wilmshurst The Ecclesiastical Organisation of the Church of the East, 1318-1913 291 Upper Ṭiyārī district Hakkārī region