JOHNSTON, David. Notice of the Discovery of a Pre-historic Burial-Place at Quarff, Shetland. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 34, p. 340–344, 1900. DOI: 10.9750/PSAS.034.340.344. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6783. Acesso em: 25 apr. 2024.