GRAHAM, Angus. Further Antiquities at Skipness, Argyll. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 54, p. 194–204, 1920. DOI: 10.9750/PSAS.054.194.204. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7486. Acesso em: 19 apr. 2024.