Stockholm: Natur & Kultur, 2007, ISBN 978-91-27-40645-2 Ternes, Elmar, The Breton language, MacAulay, Donald (编), The Celtic Languages, Cambridge University
utlendinger, Oslo: Gyldendal, 1979, ISBN 82-05-10107-8 Ternes, Elmar, The Breton language, MacAulay, Donald (编), The Celtic Languages, Cambridge University