HUNTER, J R; DOCKRILL, S J. Some Norse sites on Sanday, Orkney. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 112, p. 570–576, 1983. DOI: 10.9750/PSAS.112.570.576. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9107. Acesso em: 26 apr. 2024.