-, -. Anniversary meeting: 30 November 1973. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 105, p. 335–339, 1975. DOI: 10.9750/PSAS.105.335.339. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/10635. Acesso em: 7 may. 2024.