RUFFINO, Marco Antonio Caron. Foot’s doctrine of morality as a system of hypothetical imperatives. Manuscrito: Revista Internacional de Filosofia, Campinas, SP, v. 22, n. 2, p. 345–366, 1999. Disponível em: https://periodicos.sbu.unicamp.br/ojs/index.php/manuscrito/article/view/8666497. Acesso em: 26 abr. 2024.