TOKUNAGA, R. A new example of proto-hamzah in the early Islamic graffiti of Wādī al-Khirqah (poster). Proceedings of the Seminar for Arabian Studies, [S. l.], v. 51, p. 403–412, 2022. Disponível em: https://archaeopresspublishing.com/ojs/index.php/PSAS/article/view/635. Acesso em: 29 sep. 2022.