COLES, Frederick R. Report on Stone Circles surveyed in the North-East of Scotland, chiefly in Banffshire, with measured Plans and Drawings, obtained under the Gunning Fellowship. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 40, p. 164–206, 1906. DOI: 10.9750/PSAS.040.164.206. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7055. Acesso em: 1 may. 2024.