MARWICK, Hugh. Two Sculptured Stones recently found in Orkney. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 58, p. 295–299, 1924. DOI: 10.9750/PSAS.058.295.299. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7603. Acesso em: 17 may. 2024.