Stuart, John. “Observations Upon the Various Accounts of the Progress of the Roman Arms in Scotland, and of the Scene of the Great Battle Between Agricola and Galgacus”. Archaeologia Scotica 2 (November 30, 1823): 289–313. Accessed November 24, 2024. https://journals.socantscot.org/index.php/arch-scot/article/view/163.