Kovalets, Taras. “Mobilisation of the Armies of the Polish – Lithuanian Commonwealth before the Battle of Pereyaslav in 1630”. In Before the Battle, edited by Tadeusz Grabarczyk and Magdalena Pogońska-Pol, 7:177–194. Faces of war. Poland: Lodz University Press, 2023. Accessed February 1, 2026. https://press.uni.lodz.pl/index.php/wul/catalog/book/487/chapter/1371.