[2019-06-01]. (原始内容存档 (PDF)于2020-11-24). Árnason, Kristján, The Phonology of Icelandic and Faroese, Oxford University Press, 2011, ISBN 978-0-19-922931-4 在PHOIBLE上搜尋含有[ɻ̊]的語言
published 2000], ISBN 978-0-203-87800-2 Árnason, Kristján, The Phonology of Icelandic and Faroese, Oxford University Press, 2011, ISBN 978-0-19-922931-4 Barbosa
Chirkova & Chen (2013),第365, 367頁. Árnason, Kristján, The Phonology of Icelandic and Faroese, Oxford University Press, 2011, ISBN 978-0-19-922931-4 Chirkova