Occupation of Poland. Washington, D.C.: Dale Street Books. pp. 10–28. ISBN 9781941656105. Judith Olsak-Glass (January 1999). "Review of Piotrowski's Poland's...
German Occupation of Poland. Washington, D.C.: Dale Street Books. ISBN 978-1941656105. Antony Polonsky and Joanna B. Michlic. The Neighbors Respond: The Controversy...