CICHY, Stefan; ZIMOŃ, Damian; RAK, Romuald. Problem improwizacji w liturgii. Śląskie Studia Historyczno-Teologiczne, [S. l.], v. 11, p. 62–74, 1978. Disponível em: https://journals.us.edu.pl/index.php/ssht/article/view/22152. Acesso em: 5 luty. 2026.