Kennedy، Robert M. (1956). "Chapter 7: The Destruction of the Polish Army". The German Campaign in Poland (1939)(PDF). Washington D.C.: United States Department of the Army. ص. 91–108. مؤرشف من الأصل(PDF) في 2020-04-13.
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Kennedy، Robert M. (1956). "Chapter 7: The Destruction of the Polish Army". The German Campaign in Poland (1939)(PDF). Washington D.C.: United States Department of the Army. ص. 91–108. مؤرشف من الأصل(PDF) في 2020-04-13.