VELÁZQUEZ JORDANA, J. L. Charles Darwin and Ethics: From Sociability to Morality. Estudios de Filosofía, [S. l.], n. 42, p. 251–260, 2010. Disponível em: https://revistas.udea.edu.co/index.php/estudios_de_filosofia/article/view/11591. Acesso em: 12 aug. 2022.