WATKINS, Trevor; BARCLAY, Gordon J. Excavation of a settlement and souterrain at Newmill, near Bankfoot, Perthshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 110, p. 165–208, 1981. DOI: 10.9750/PSAS.110.165.208. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9027. Acesso em: 26 apr. 2024.