DREJA, Antoni. Józef Pieter, Czasy i ludzie. Śląskie Studia Historyczno-Teologiczne, [S. l.], v. 1994, p. 489–490, 1995. Disponível em: https://journals.us.edu.pl/index.php/ssht/article/view/21378. Acesso em: 5 grudz. 2025.