ASHMORE, Patrick J. Excavations at Summersdale, Orkney by F G Wainwright in July 1960. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 105, p. 41–42, 1975. DOI: 10.9750/PSAS.105.41.42. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8873. Acesso em: 24 apr. 2024.