IRVINE, James T. Notes on some Prehistoric Burial-Places and Standing Stones in the Island of Yell, Shetland. (With Illustrations.). Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 21, p. 215–219, 1887. DOI: 10.9750/PSAS.021.215.219. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6242. Acesso em: 22 nov. 2024.