Thomas A. Carlson (ed.), "Mar Yoḥannan" in last modified January 14, 2014, http://syriaca.org/place/2501 Mar Yoḥannan Mār Yōḥannān Salmas district Ūrmī region http://syriaca.org/place/2501 David Wilmshurst The Ecclesiastical Organisation of the Church of the East, 1318-1913 23, 295, 327, 351