GRIEVE, Symington. A Remarkable Stone Implement resembling a Knife found at Caisteal nan Gillean, Oronsay. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 56, p. 164–168, 1922. DOI: 10.9750/PSAS.056.164.168. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7541. Acesso em: 4 may. 2024.