Giedroyc, Jerzy, Zofia Hertz, and Zygmunt Hertz. Listy 1943–1981. Edited by Sławomir M. Nowinowski and Kamila Łabno-Hajduk. Jerzy Giedroyc and. Poland: Lodz University Press, 2026. Accessed April 25, 2026. https://www.press.uni.lodz.pl/index.php/wul/catalog/book/1685.