Formoso Gosende, Valentina. “Some Remarks on the Use of Galician Language Within the Bussiness Sector in the 20th Century”. Madrygal. Revista de Estudios Gallegos, vol. 7, Nov. 2004, pp. 51-62, https://revistas.ucm.es/index.php/MADR/article/view/MADR0404110051A.