NIEWIADOMSKI, Krzysztof. Gratitude – a neglected virtue. The possibility to use psychological theories in the catholic conception of upbringing of this virtue. Teologia i Moralność, [S. l.], v. 9, n. 1(15), p. 233–254, 2014. DOI: 10.14746/tim.2014.15.1.13. Disponível em: https://pressto.amu.edu.pl/index.php/tim/article/view/2279. Acesso em: 18 jul. 2024.