-, -. Anniversary meeting: 30 November 1977. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 108, p. 394–402, 1979. DOI: 10.9750/PSAS.108.394.402. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/10640. Acesso em: 3 may. 2024.