{{Cite book| publisher = Editions Olole Urz Goanag Breiz| isbn = https://bibliotheque.idbe.bzh/document.php?id=istor-breiz-toutouig-616&l=fr| last1 = Caouissin| first1 = Herry| last2 = Jobbé-Duval| first2 = Félix| title = Istor Breiz Toutouig| date = 1944}}