BALFOUR, David. Note on a Small Gold Ring of Twisted Wires, found in a Pict’s House at Shapinshay, Orkney. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 8, p. 407–408, 1871. DOI: 10.9750/PSAS.008.407.408. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5442. Acesso em: 26 apr. 2024.