GRANT, Angus. Notice of an Ornamented Stone Cup found at Balmacaan, Glenurquhart. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 33, p. 167–169, 1899. DOI: 10.9750/PSAS.033.167.169. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6736. Acesso em: 8 may. 2024.