WALKER, Thomas J. Notice of a Large Cruciform Fibula or Brooch of Bronze, overlaid with Gold, found in Peterborough in 1878. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 22, p. 263–265, 1888. DOI: 10.9750/PSAS.022.263.265. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6266. Acesso em: 4 may. 2024.