WALSH, Samantha; KNÜSEL, Chris; MELTON, Nigel. A re-appraisal of the Early Neolithic human remains excavated at Sumburgh, Shetland, in 1977. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 141, p. 3–17, 2012. DOI: 10.9750/PSAS.141.3.17. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9766. Acesso em: 25 jul. 2024.