ROSS, L. On the Two Metamorphoses of Human Activity in Marx. Cosmos and History: The Journal of Natural and Social Philosophy, [S. l.], v. 15, n. 1, p. 117–141, 2019. Disponível em: http://cosmosandhistory.org/index.php/journal/article/view/798. Acesso em: 5 may. 2024.