Polish Braille

Bank, Sebastian (编). Polish. Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History. 2016.  Wiktor Jassem. Polish. Journal of the International

Press. 2003 [First published 1992]. ISBN 0-7190-6689-1.  Jassem, Wiktor. Polish. Journal of the International Phonetic Association. 2003-06, 33 (1). ISSN 0025-1003

1017/S002510030000459X  Gussmann, Edmund, Fisiak, Jacek , 编, Nasality in Polish and English (PDF), Papers and Studies in Contrastive Linguistics (Poznań:

British English, Baltimore: University Park Press, 1979  Jassem, Wiktor, Polish, Journal of the International Phonetic Association, 2003, 33 (1): 103–107

Association, 1993, 23 (2): 73–76, doi:10.1017/S0025100300004874  Jassem, Wiktor, Polish, Journal of the International Phonetic Association, 2003, 33 (1): 103–107