MACMILLAN, Hugh. Notice of two Boulders having Rain-filled Cavities on the Shores of Loch Tay, formerly associated with the Cure of Disease. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 18, p. 369–376, 1884. DOI: 10.9750/PSAS.018.369.376. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6115. Acesso em: 24 apr. 2024.