STRZELECKI, J. Truth Tree – Logic for Humanists. Humanities and Natural Sciences, [S. l.], n. 17, p. 83–106, 2018. DOI: 10.31648/hip.828. Disponível em: https://czasopisma.uwm.edu.pl/index.php/hip/article/view/828. Acesso em: 18 may. 2024.