MAXWELL-IRVING, Alastair M T. Borthwick Castle, near Duns: excavations, 1979. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 111, p. 430–444, 1982. DOI: 10.9750/PSAS.111.430.444. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9066. Acesso em: 26 apr. 2024.