MACDONALD, David. An Unrecognized Countermark of the Knights of Malta. KOINON: The International Journal of Classical Numismatic Studies, [S. l.], v. 5, p. 140–142, 2022. DOI: 10.32028/k.v5i.1661. Disponível em: https://www.archaeopresspublishing.com/ojs/index.php/koinon/article/view/1661. Acesso em: 28 dec. 2025.