Macdonald, Michael C.A. “Towards a Re-Assessment of the Ancient North Arabian Alphabets Used in the Oasis of Al-ΚUlā”. Proceedings of the Seminar for Arabian Studies 48 (January 1, 2018): 1–21. Accessed October 28, 2025. https://archaeopresspublishing.com/ojs/index.php/PSAS/article/view/1198.