THOMAS, F W L. On the Primitive Dwellings and Hypogea of the outer Hebrides. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 7, p. 153–195, 1867. DOI: 10.9750/PSAS.007.153.195. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5321. Acesso em: 19 apr. 2024.