Thomas A. Carlson (ed.), "Gissā" in last modified January 14, 2014, http://syriaca.org/place/1229 Gissā http://syriaca.org/place/1229 David Wilmshurst The Ecclesiastical Organisation of the Church of the East, 1318-1913 105, 139, 140, 151, 297, 298 Tḥūmā district Hakkārī region