Korytko, A. “Jakub Sobieski, ROKOWANIA DYPLOMATYCZNE POLSKO-SZWEDZKIE W PRABUTACH I ALTMARKU W LATACH 1628–1629 [POLISH-SWEDISH DIPLOMATIC NEGOTIATIONS IN PRABUTY AND ALTMARK IN THE YEARS 1628–1629], Ed. By Justyna Gałuszka”. Legatio: The Journal for Renaissance and Early Modern Diplomatic Studies, vol. 6, June 2023, pp. 129-30, https://apcz.umk.pl/Legatio/article/view/44467.