RODRÍGUEZ ORTIZ, Angélica María. SEARLE AND THE POSSIBILITY OF DERIVING AN "OUGHT" FROM AN "IS" . Escritos, [S. l.], v. 23, n. 50, p. 213–229, 2015. Disponível em: https://revistas.upb.edu.co/index.php/escritos/article/view/682. Acesso em: 6 jun. 2026.