Sacewicz, Karol. „Concepts of the Political and Military Position of the Polish Underground State in Response to the Red Army’s Invasion of the Eastern Territories of the Second Republic of Poland (1943-1944) - a Broad Outline”. Echa Przeszłości, no. XII (marzec 10, 2019). Udostępniono lipiec 18, 2024. https://czasopisma.uwm.edu.pl/index.php/ep/article/view/3342.