ANDERSON, Joseph. Notice of a Bronze Spear-Head found near Duddo Castle, Northumberland, the property of Sir John Marjoribanks. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 17, p. 93–98, 1883. DOI: 10.9750/PSAS.017.93.98. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6052. Acesso em: 25 apr. 2024.