NAISMITH, W W. Cup-markings near Moulin, Perthshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 61, p. 222–223, 1927. DOI: 10.9750/PSAS.061.222.223. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7701. Acesso em: 25 apr. 2024.