CZUBARA, Krzysztof. Dr Tadeusz Stanisław Onyszkiewicz (1906-1989). Archiwariusz Zamojski, [S. l.], v. 5, p. 53–58, 2006. DOI: 10.56583/az.1435. Disponível em: https://czaz.akademiazamojska.edu.pl/index.php/az/article/view/1435. Acesso em: 23 lip. 2025.