HAVERFIELD, Professor. Agricola and the Antonine Wall. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 52, p. 174–181, 1918. DOI: 10.9750/PSAS.052.174.181. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7429. Acesso em: 3 may. 2024.