WHEELER, Douglas L. William Breuer, Hitler’s Undercover War. The Nazi Espionage Invasion of the U.S.A. Journal of Conflict Studies, [S. l.], v. 10, n. 3, 1990. Disponível em: https://journals.lib.unb.ca/index.php/JCS/article/view/14910. Acesso em: 4 may. 2024.