SMITH, N. J. C. The Kilwa Coins of Sultan al-Ḥasan ibn Sulaymān in their Historical Context. KOINON: The International Journal of Classical Numismatic Studies, [S. l.], v. 1, p. 107–114, 2018. DOI: 10.32028/k.v1i.1165. Disponível em: https://www.archaeopresspublishing.com/ojs/index.php/koinon/article/view/1165. Acesso em: 29 dec. 2025.