Andrzej Paczkowski: The Spring Will Be Ours: Poland and the Poles from Occupation to Freedom. Pennsylvania State University, 2003, ISBN 0-271-02308-2, S. 113.
Sarah Meiklejohn Terry: Poland's Place in Europe. General Sikorski and the Origin of the Oder-Neisse Line, 1939–1943. Princeton University Press, 2014, ISBN 1-4008-5717-1, S. 343.