-, -. Anniversary meeting: 30 November 1991. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 121, p. 478–488, 1992. DOI: 10.9750/PSAS.121.478.488. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/10671. Acesso em: 7 may. 2024.