CRUDEN, Stewart H. The Ramparts of Traprain Law; excavations in 1939. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 74, p. 48–59, 1940. DOI: 10.9750/PSAS.074.48.59. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8126. Acesso em: 7 may. 2024.