清软腭鼻音E., The distinctive vowels and consonants of Welsh, Martin J. Ball and Glyn E. Jones (编), Welsh Phonology: Selected Readings, Cardiff: University of Wales
清齿龈鼻音E., The distinctive vowels and consonants of Welsh, Martin J. Ball and Glyn E. Jones (编), Welsh Phonology: Selected Readings, Cardiff: University of Wales
清双唇鼻音E., The distinctive vowels and consonants of Welsh, Martin J. Ball and Glyn E. Jones (编), Welsh Phonology: Selected Readings, Cardiff: University of Wales
次闭央不圆唇元音ISBN 3-11-017532-0 Ball, Martin J., Phonetics for phonology, Ball, Martin J.; Jones, G.E (编), Welsh Phonology, Cardiff: University of Wales Press, 1984, ISBN 0-7083-0861-9
清双唇塞擦音675–685 [2018-07-28], （原始内容存档于2012-03-04） Penhallurick, Robert, Welsh English: phonology, Schneider, Edgar W.; Burridge, Kate; Kortmann, Bernd; Mesthrie