WATSON, William J. Circular Forts in Lorn and North Perthshire; with a Note on the Excavation of one at Borenich, Loch Tummel. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 49, p. 17–32, 1915. DOI: 10.9750/PSAS.049.17.32. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7349. Acesso em: 30 apr. 2024.