HASSAN TOGUN ABDULLAH, ADNAN MALEH SAJIT, MARWA HABIB HASSAN. Espionage in ancient civilizations (3000BC-757AD): التجسس في الحضارات القديمة (3000ق. م- 757م). مجلة العلوم الإنسانية و الإجتماعية, [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: 22 2022.