Southesk, Earl of. “The Oghams on the Brodie and Aquhollie Stones, With Notes on the Inscriptions of the Golspie and Newton Stones, and a List of the Oghams in Scotland”. Proceedings of the Society of Antiquaries of Scotland 20 (November 30, 1886): 14–40. Accessed May 4, 2024. https://journals.socantscot.org/index.php/psas/article/view/6177.