SKENE, William F. Notes on the Earldom of Caithness. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 12, p. 571–576, 1878. DOI: 10.9750/PSAS.012.571.576. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5838. Acesso em: 27 apr. 2024.