MITCHELL, Arthur. Note on large Stone Implements found in Shetland. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 8, p. 64–66, 1869. DOI: 10.9750/PSAS.008.64.66. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5402. Acesso em: 25 apr. 2024.