How to Undertake Surveillance and Reconnaissance: From a Civilian and Military Perspective: by Henry Prunckun. Salus Journal, [S. l.], v. 4, n. 1, p. 38–40, 2023. Disponível em: https://journals.csu.domains/index.php/salusjournal/article/view/55. Acesso em: 16 sep. 2026.