MACKIE, Euan W. Some new quernstones from brochs and duns. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 104, p. 137–146, 1974. DOI: 10.9750/PSAS.104.137.146. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8814. Acesso em: 25 apr. 2024.