MCGAVIN, N A et al. Excavations in Kirkwall, 1978. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 112, p. 392–436, 1983. DOI: 10.9750/PSAS.112.392.436. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9089. Acesso em: 3 may. 2024.