al-Theeb, Solaiman ʿAbd al-Raḥmān. “New Nabataean Inscriptions from the Site of Al-Sīj in the Region of Al-ʿUlā, Saudi Arabia”. Proceedings of the Seminar for Arabian Studies, vol. 41, Sept. 2011, pp. 349-71, https://archaeopresspublishing.com/ojs/index.php/PSAS/article/view/1700.