Taylor, D B, and Audrey S Henshall. “Excavation of a Promontory Fort, Broch and Souterrain at Hurly Hawkin, Angus”. Proceedings of the Society of Antiquaries of Scotland 112 (November 30, 1983): 215–253. Accessed December 9, 2024. https://journals.socantscot.org/index.php/psas/article/view/9082.