HANNAH, J. Notice of an Ancient Structure near Glenalmond. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 9, p. 291–292, 1871. DOI: 10.9750/PSAS.009.291.292. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5488. Acesso em: 6 may. 2024.