GRAHAM, Angus. Further records and opinions. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 109, p. 301–351, 1980. DOI: 10.9750/PSAS.109.301.351. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9006. Acesso em: 25 apr. 2024.