GRAHAM, Angus; RICHMOND, Ian A. Roman communications in the Tweed Valley. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 87, p. 63–71, 1955. DOI: 10.9750/PSAS.087.63.71. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8432. Acesso em: 21 may. 2024.