CALLANDER, J Graham; GRANT, Walter G. A stalled chambered cairn, the Knowe of Ramsay, at Hullion, Rousay, Orkney. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 70, p. 407–419, 1936. DOI: 10.9750/PSAS.070.407.419. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7993. Acesso em: 26 apr. 2024.