SZUMERA, Grażyna. Civilization aspects of the reflections on the direction of the change in the history of philosophy. Folia Philosophica, [S. l.], v. 21, p. 213–231, 2003. DOI: 10.31261/fp.20896. Disponível em: https://journals.us.edu.pl/index.php/FOLIA/article/view/20896. Acesso em: 5 dec. 2025.