AITKEN, John. On some peculiar Cupped Stones found in the parish of Colmonell, Ayrshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 42, p. 183–190, 1908. DOI: 10.9750/PSAS.042.183.190. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7104. Acesso em: 2 may. 2024.