BREEZE, David J. Eric Birley. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 125, p. xiii-xvi, 1996. DOI: 10.9750/PSAS.125.xiii.xvi. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/10407. Acesso em: 23 apr. 2024.