JASPERSAS, Karlas. Introduction to Philosophy (Extracts). Problemos, [S. l.], v. 7, p. 95–108, 1971. DOI: 10.15388/Problemos.1971.7.5818. Disponível em: https://journals.vu.lt./problemos/article/view/5818. Acesso em: 19 apr. 2025.