GRAHAM, Angus. Records and opinions: 1780-1930. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 102, p. 241–284, 1973. DOI: 10.9750/PSAS.102.241.284. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8779. Acesso em: 4 may. 2024.