Turner, D J, and John G Dunbar. “Breachacha Castle, Coll: Excavation and Field Survey, 1965-8”. Proceedings of the Society of Antiquaries of Scotland 102 (November 30, 1973): 155–187. Accessed November 22, 2024. https://journals.socantscot.org/index.php/psas/article/view/8776.