Rujukan Vokal tak bundar pusat sempit

  1. ↑ http://www.lc.mahidol.ac.th/Documents/Publication/MKS/11/abdul1982agreement.pdf
  2. ↑ http://roa.rutgers.edu/files/594-0403/594-0403-AL-HARBI-0-0.PDF
  3. ↑ http://www.acehinstitute.org/Durie_1990.pdf
  4. ↑ Iivonen, Antti; Harnud, Huhe (2005), "Acoustical comparison of the monophthong systems in Finnish, Mongolian and Udmurt", Journal of the International Phonetic Association, 35 (1): 59–71
  5. ↑ González de Perez (2005:50)
  6. ↑ Jassem, Wiktor (2003), "Polish", Journal of the International Phonetic Association, 33 (1): 103–107
  7. ↑ Jones, Daniel; Dennis, Ward (1969). The Phonetics of Russian. Cambridge University Press.
  8. ↑ Hargus, Sharon; Beavert, Virginia (2002), "Predictable versus Underlying Vocalism in Yakima Sahaptin", International Journal of American Linguistics, 68 (3): 316
  9. ↑ Firestone, Homer L. (1965), "Description and classification of Sirionó: A Tupí-Guaraní language.", Janua linguarum, Series Practica, London: Mouton & Co
  10. ↑ Iivonen, Antti; Harnud, Huhe (2005), "Acoustical comparison of the monophthong systems in Finnish, Mongolian and Udmurt", Journal of the International Phonetic Association, 35 (1): 59–71
  11. ↑ Ball, Martin J. (1984), "Phonetics for phonology", dalam Ball, Martin J.; Jones, G.E (para penyunting), Welsh Phonology, Cardiff: University of Wales Press, ISBN 0-7083-0861-9
  12. ↑ Merrill, Elizabeth (2008), "Tilquipan Zapotec", Journal of the International Phonetic Association, 38 (1): 107–114