MATHIESON, John. The Antiquities of the St Kilda Group of Islands. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 62, p. 123–132, 1928. DOI: 10.9750/PSAS.062.123.132. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7740. Acesso em: 19 may. 2024.