CAMPBELL, Robert. Notice of the Discovery of Eight Silver Rings or Ancient Wrist or Ankle Rings, in Cists near Rattar, Dunnet, Caithness. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 9, p. 422–428, 1871. DOI: 10.9750/PSAS.009.422.428. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5519. Acesso em: 9 may. 2024.