CALDER, Charles S T; HENSHALL, Audrey S. Cairns, Neolithic Houses and Burnt Mounds in Shetland. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 96, p. 37–86, 1965. DOI: 10.9750/PSAS.096.37.86. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/10093. Acesso em: 7 may. 2024.