Barłowska, Maria. “Paper Stronger Than Stone: On Stanisław Żółkiewski’s Epitaph and Its Authorship Attributed to Jakub Sobieski”. Prace Filologiczne. Literaturoznawstwo, no. 13 (16) (June 25, 2023): 407–429. Accessed May 17, 2024. https://www.journals.polon.uw.edu.pl/index.php/pfl/article/view/953.