GRAHAM, Angus. A Survey of the Ancient Monuments of Skipness. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 53, p. 76–118, 1919. DOI: 10.9750/PSAS.053.76.118. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7464. Acesso em: 26 apr. 2024.