FERGUSSON, Jas. On the Norwegian Origin of Scottish Brochs. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 12, p. 630–669, 1877. DOI: 10.9750/PSAS.012.630.669. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5848. Acesso em: 19 apr. 2024.