MUNRO, Robert. Notes on a Hoard of Eleven Stone Knives found in Shetland. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 40, p. 151–164, 1906. DOI: 10.9750/PSAS.040.151.164. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7054. Acesso em: 28 apr. 2024.