KEPPIE, Lawrence. Anne S Robertson. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 127, p. xiii-xvii, 1998. DOI: 10.9750/PSAS.127.xiii.xvii. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/10409. Acesso em: 25 aug. 2024.