SKENE, William F. On the Early Frisian Settlements in Scotland. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 4, p. 169–181, 1862. DOI: 10.9750/PSAS.004.169.181. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/4658. Acesso em: 26 apr. 2024.