Thomas A. Carlson (ed.), "Tkhuma" in last modified January 14, 2014, http://syriaca.org/place/251
    
        
            
                
                    Tkhuma
                    Tḥūmā
                    A region in the Hakkari mountains.
                    
                        Hakkārī region
                    
          
                        
                    
                    http://syriaca.org/place/251
                    
                        The Gorgias Encyclopedic Dictionary of the Syriac Heritage
                        
                        186, 358
                        Map IV
                    
                    
                        David Wilmshurst
                        The Ecclesiastical Organisation of the Church of the East, 1318-1913
                        14, 33, 71, 105, 136, 151, 253, 259, 282, 285, 287, 289, 292, 294, 296-298, 299, 310, 337, 357, 366