-, -. Anniversary meeting: 30 November 1972. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 104, p. 324–328, 1974. DOI: 10.9750/PSAS.104.324.328. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/10633. Acesso em: 5 may. 2024.