HALL, Derek; LINDSAY, W J; CALDWELL, D H; DAVEY, P J; HODGSON, G W I; SMITH, C. Excavations at Scalloway Castle, 1979 and 1980. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 113, p. 554–593, 1984. DOI: 10.9750/PSAS.113.554.593. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9137. Acesso em: 26 apr. 2024.