PLOEGER, Jan. Ultima Ratio Regum (The last argument of kings). Scientia Militaria - South African Journal of Military Studies, [S. l.], v. 18, n. 1, 2012. DOI: 10.5787/18-1-416. Disponível em: https://www.journals.ac.za/index.php/pub/article/view/416. Acesso em: 12 jun. 2026.