COWIE, Trevor G. A stone head from Port Appin, Argyll. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 116, p. 89–91, 1987. DOI: 10.9750/PSAS.116.89.91. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9261. Acesso em: 16 apr. 2024.