CHROBAK, S. Józef Kozielecki, Psychologia nadziei, Wydawnictwo Akademickie „Żak”, Warszawa 2006. Seminare. Learned Investigations, [S. l.], v. 24, p. 601–602, 2007. DOI: 10.21852/sem.2007.24.53. Disponível em: https://czasopisma.uksw.edu.pl/index.php/s/article/view/11932. Acesso em: 18 may. 2024.