Piper, Franciszek. “Role of Manpower of Prisoners of Nazi Concentration Camps in the Third Reich Economy ”. Studia Historiae Oeconomicae 14, no. 1 (June 1, 1979): 263–266. Accessed October 12, 2024. https://pressto.amu.edu.pl/index.php/sho/article/view/44237.