Archaeological survey of the Bhaltos (Valtos) peninsula, Lewis. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 124, p. 67–93, 1995. DOI: 10.9750/PSAS.124.67.93. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9487. Acesso em: 6 dec. 2025.