ZUBERBIER, Andrzej. Alfons Skowronek, Sakrament in der evangelischen Theologie der Gegenwart. Śląskie Studia Historyczno-Teologiczne, [S. l.], v. 5, p. 300–308, 1972. Disponível em: https://journals.us.edu.pl/index.php/ssht/article/view/22579. Acesso em: 6 grudz. 2025.