Zadencka, Maria. “Materials from the Collection of the Polish Museum in Rapperswil: Józef Mackiewicz and Józef Fryd on The Colonel Myasoyedov Affair”. Bibliotekarz Podlaski 48, no. 3 (November 1, 2020): 129–142. Accessed April 16, 2024. https://bibliotekarzpodlaski.pl/index.php/bp/article/view/522.