MARWICK, Hugh. A Rune-Inscribed Stone from Birsay, Orkney. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 56, p. 67–71, 1922. DOI: 10.9750/PSAS.056.67.71. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7535. Acesso em: 2 may. 2024.