Kopiec, Jan. «Private Correspondence of Nuncio Julius Piazza With Bishop Agostino Steffani of the Years 1706-1708». Nasza Przeszłość 138, no. 2 (dicembre 31, 2022): 2.53–72. Consultato giugno 5, 2025. https://ojs.academicon.pl/np/article/view/5071.