SELVAGE, D. Defining the Ideological ’Enemy’: The KGB’s Reports on ’Trends in the Tactics of the Enemy for Conducting Ideological Subversion’, 1974–1988. Aparat Represji w Polsce Ludowej 1944-1989, [S. l.], n. 18, p. 389–403, 2023. DOI: 10.48261/ARPRL201812. Disponível em: https://czasopisma.ipn.gov.pl/index.php/arpl/article/view/1667. Acesso em: 23 grudz. 2024.