The Enigma Bulletin No 8 (Special issue, Kraków-Mogilany 2005)
Zdzisław J. KAPERA, ed., Humint, Sigint & Fortune in the Battle of Warsaw, 1920. Collected Essays on the Miracle at the Vistula. ISBN 83-86110-58-9.
Vol. in 8*, about 100 pages, illustrations. Paper. Price: USD 20.00