PARKINSON, Frederick. Christopher Andrew and Oleg Gordievsky, KGB: The Inside Story of its Foreign Operations from Lenin to Gorbachev. Journal of Conflict Studies, [S. l.], v. 12, n. 1, 1992. Disponível em: https://journals.lib.unb.ca/index.php/JCS/article/view/15012. Acesso em: 3 may. 2024.