TRAILL, William. Notice of Two Cists on the Farm of Antabreck, North Ronaldsay, Orkney. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 11, p. 309–310, 1875. DOI: 10.9750/PSAS.011.309.310. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5749. Acesso em: 27 apr. 2024.