CALDER, Charles S T. Excavations of Iron-Age dwellings on the Calf of Eday in Orkney. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 73, p. 167–185, 1939. DOI: 10.9750/PSAS.073.167.185. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8109. Acesso em: 18 jul. 2024.