The excavation of Cairnwell ring-cairn, Portlethen, Aberdeenshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 127, p. 255–279, 1998. DOI: 10.9750/PSAS.127.255.279. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9966. Acesso em: 1 feb. 2026.