MacDonald, James. “Historical Notices of the ’Broch’ or Burghead, in Moray, With an Account of Its Antiquties”. Proceedings of the Society of Antiquaries of Scotland 4 (November 30, 1862): 321–342. Accessed April 26, 2024. https://journals.socantscot.org/index.php/psas/article/view/4815.