LAING, Lloyd; OAKLEY, Edward; SASSIN, Anne E; TOMPSETT, Imogen. Excavations at the early and later medieval site of Ballachly, Dunbeath, Caithness, 2007-10. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 143, p. 265–302, 2014. DOI: 10.9750/PSAS.143.265.302. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9804. Acesso em: 6 may. 2024.