Krasucki, Eryk. “Polish Research on the History of the Comintern: An Overview of Existing Literature and an Outline of Future Perspectives”. Acta Poloniae Historica 123 (July 18, 2021): 261–287. Accessed December 20, 2025. https://apcz.umk.pl/APH/article/view/APH.2021.123.10.