Kallweit, H., and M. J. Beech. “Some Remarks on the Lithic Assemblage from a Coastal Ubaid-Related Settlement Site on Delma Island, Abu Dhabi Emirate, United Arab Emirates”. Proceedings of the Seminar for Arabian Studies, vol. 50, no. 2, Jan. 2020, pp. 121-37, http://archaeopresspublishing.com/ojs/index.php/PSAS/article/view/1191.