GRAHAM, Angus. Notes: (7) New Vitrified Forts. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 81, p. 182, 1949. DOI: 10.9750/PSAS.081.182. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8286. Acesso em: 14 jun. 2024.