-, -. Anniversary meeting: 30 November 1968. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 100, p. 211–214, 1969. DOI: 10.9750/PSAS.100.211.214. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/10629. Acesso em: 4 may. 2024.