Thomas A. Carlson (eds.), "Sūdān" in The Beth Qaṭraye Gazetteer last modified January 10, 2020, https://bqgazetteer.bethmardutho.org/place/2948
   
      
         
            
               Sūdān
               السودان
               The region of sub-Saharan Africa.
               
                  Attestation of name السودان in
                     the Kitāb al-aʿlāq al-nafīsa of
                        Aḥmad ibn ʿUmar Ibn Rustah.
                  
               
                                                                     
               https://bqgazetteer.bethmardutho.org/place/2948
               http://syriaca.org/place/2948
               https://en.wikipedia.org/wiki/Sudan_(region)
               https://dbpedia.org/resource/Sudan_(region)
               
                  Kitāb al-aʿlāq al-nafīsa
                  Aḥmad ibn ʿUmar Ibn Rustah
                  
                  88