AYALA MARTÍNEZ, Jorge M. El derecho natural antiguo y medieval. Revista Española de Filosofía Medieval, [S. l.], v. 10, p. 377–386, 2003. DOI: 10.21071/refime.v10i.9278. Disponível em: https://journals.uco.es/refime/article/view/9278. Acesso em: 6 dic. 2025.