ROBERTSON, W Norman. A Viking grave found at the Broch of Gurness, Aikerness, Orkney. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 101, p. 289–290, 1971. DOI: 10.9750/PSAS.101.289.290. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8759. Acesso em: 6 may. 2024.