MUNRO, Robert; ABERCROMBY, John. Notes on Primitive Stone Structures of the Beehive Type, discovered by R.C. Haldane, Esq., in the North of Shetland. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 38, p. 548–558, 1904. DOI: 10.9750/PSAS.038.548.558. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6994. Acesso em: 20 apr. 2024.