-, -. Anniversary meeting: 30 November 1971. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 103, p. 250–255, 1974. DOI: 10.9750/PSAS.103.250.255. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/10632. Acesso em: 3 may. 2024.