RAIGÓN RODRÍGUEZ, Antonio; LARREA ESPINAR, Ángela. Language certification in the Spanish Universities: A quantitative study at the University of Córdoba. IJERI: International Journal of Educational Research and Innovation, Sevilla, España, n. 12, p. 245–260, 2019. DOI: 10.46661/ijeri.3750. Disponível em: https://www.upo.es/revistas/index.php/IJERI/article/view/3750. Acesso em: 4 jul. 2025.