COOK, R. ’Unless’ is ’Or’, Unless ’¬A Unless A’ is Invalid. Dialectica, [S. l.], v. 999, n. 1, 2022. DOI: 10.48106/dial.v74.i2.07. Disponível em: https://dialectica.philosophie.ch/dialectica/article/view/18. Acesso em: 19 apr. 2024.