Bibliografi Vokal_tak_bundar_depan_separuh_luas

  • Carbonell, Joan F. & Joaquim Llisterri (1992), "Catalan", Journal of the International Phonetic Association 22 (1-2): 53-56
  • Cruz-Ferreira, Madalena (1995), "European Portuguese", Journal of the International Phonetic Association 25 (2): 90-94
  • Fougeron, Cecile & Caroline L Smith (1993), "Illustrations of the IPA:French", Journal of the International Phonetic Association 23 (2): 73-76
  • Jones, Daniel & Ward Dennis (1969), The Phonetics of Russian, Cambridge University Press
  • Jassem, Wiktor (2003), "Polish", Journal of the International Phonetic Association 33 (1): 103-107
  • Rogers, Derek & Luciana d'Arcangeli (2004), "Italian", Journal of the International Phonetic Association 34 (1): 117-121
  • Shosted, Ryan K. & Chikovani Vakhtang (2006), "Standard Georgian", Journal of the International Phonetic Association 36 (2): 255-264