KATOLO, Artur. Customs Services of the Papal States in the 19th Century. Teka Komisji Prawniczej PAN Oddział w Lublinie, [S. l.], v. 19, n. 1, p. 597–604, 2026. DOI: 10.32084/tkp.10658. Disponível em: https://ojs.academicon.pl/tkppan/article/view/10658. Acesso em: 6 jul. 2026.