Espionage in ancient civilizations (3000BC-757AD). Journal of Humanities & Social Sciences, [S. l.], v. 5, n. 4, p. 112–123, 2021. DOI: 10.26389/AJSRP.K141020. Disponível em: https://journals.ajsrp.com/index.php/jhss/article/view/3497.. Acesso em: 25 aug. 2024.