Carr, Ralph. “On the Inscriptions Upon the Stone at Newton Insch, Aberdeenshire, and on the Inscriptions on a Sculptured Stone at St Vigean’s, Forfarshire”. Proceedings of the Society of Antiquaries of Scotland 7 (November 30, 1867): 11–23. Accessed April 16, 2024. https://journals.socantscot.org/index.php/psas/article/view/5310.