Clachan Ard Fort, Bute. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 68, p. 420–423, 1934. DOI: 10.9750/PSAS.068.420.423. Disponível em: https://soas-test.journals.ed.ac.uk/index.php/psas/article/view/7919. Acesso em: 27 oct. 2025.