CALDWELL, David H. A silver pendant cross from Dumbarton Castle. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 121, p. 329–330, 1992. DOI: 10.9750/PSAS.121.329.330. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9413. Acesso em: 2 may. 2024.