FAIRHURST, Horace. An Caisteal: An Iron Age Fortification in Mull. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 95, p. 199–207, 1964. DOI: 10.9750/PSAS.095.199.207. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8628. Acesso em: 28 apr. 2024.