Litawa, Karol. “The Piotrków Rituale Sacramentorum of 1631 and Its Significance Against the Background of the History of the Roman Ritual”. Perspectives on Culture 33, no. 2 (July 1, 2021): 47-60. Accessed October 31, 2025. https://czasopisma.ignatianum.edu.pl/pk/article/view/1788.