MORRIS, Christopher D et al. The chapel and enclosure on the Brough of Deerness, Orkney: survey and excavations, 1975-1977. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 116, p. 301–374, 1987. DOI: 10.9750/PSAS.116.301.374. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9273. Acesso em: 5 may. 2024.