HAGGART, D. Notice of the Discovery of a Stone Cup and Cup-Marked Stones at Lochearnhead. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 22, p. 282–283, 1888. DOI: 10.9750/PSAS.022.282.283. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6269. Acesso em: 2 may. 2024.