-, -. Anniversary meeting: 30 November 1970. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 102, p. 302–306, 1973. DOI: 10.9750/PSAS.102.302.306. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/10631. Acesso em: 4 may. 2024.