STEWART, Alexander. Notice of a Highland Charm-Stone. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 24, p. 157–160, 1890. DOI: 10.9750/PSAS.024.157.160. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6359. Acesso em: 16 apr. 2024.