MACNAB, John Munro. On the Origin and Significance of the Legionary Symbol of the Twentieth Legion of the Roman Army in Britain. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 17, p. 400–413, 1883. DOI: 10.9750/PSAS.017.400.413. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6074. Acesso em: 19 apr. 2024.