SOËTARD, M. Célestine Freinet (1896-1966). Padres y Maestros / Journal of Parents and Teachers, [S. l.], n. 354, p. 44–48, 2013. Disponível em: https://revistas.comillas.edu/index.php/padresymaestros/article/view/2237. Acesso em: 14 abr. 2025.