CURLE, Alexander O. Note of Excavations on Ruberslaw, Roxburghshire, supplementary to the Description of the Fortifications thereon. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 41, p. 451–453, 1907. DOI: 10.9750/PSAS.041.451.453. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7094. Acesso em: 20 apr. 2024.