Tham khảo Tiếng_Hạ_Sorb

  • Hannusch, Erwin (1998), Niedersorbisch praktisch und verständlich, Bautzen: Domowina-Verlag, ISBN 3-7420-1667-9 
  • Laver, John (1994), Principles of Phonetics, Cambridge: Cambridge University Press, ISBN 0-521-45655-X 
  • Šewc-Schuster, Hinc (1984), Gramatika hornjoserbskeje rěče, Budyšin: Ludowe nakładnistwo Domowina 
  • Stone, Gerald (2002), “Sorbian (Upper and Lower)”, trong Comrie, Bernard; Corbett, Greville G., The Slavonic Languages, London and New York: Routledge, tr. 593–685, ISBN 9780415280785 
  • Zygis, Marzena (2003), “Phonetic and Phonological Aspects of Slavic Sibilant Fricatives” (PDF), ZAS Papers in Linguistics 3: 175–213