PROUDFOOT, Edwina et al. Excavations at Niddry Castle, West Lothian, 1986-90. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 127, p. 783–842, 1998. DOI: 10.9750/PSAS.127.783.842. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9986. Acesso em: 25 apr. 2024.