BILLELABEITIA, . Euzkadi 1913-1937. Euskara eta euskal atalaren garapena Lauaxetaren "azalbenak". EGAN, [S. l.], v. 58, n. 3-4, 2021. Disponível em: http://rsbap.org/index.php/egan/article/view/2969. Acesso em: 18 may. 2024.