^Umiastowski, R. (1946) Poland, Russia and Great Britain 1941-1945 Hollis & Carter pp. 465–471
^"No Witnesses for the Defence Allowed". The Moscow Trial of the 16 Polish Leaders. London: Liberty Publications. 1945. 24 pages, 2 ill. Electronic version by Roman Antoszewski, Titirangi, Auckland, New Zealand; July 2000. Archived from the original on 4 February 2012. Retrieved 30 March 2017 – via Internet Archive.