SHERRIFF, John R. Excavations at Castle Craig, Auchterarder, 1978. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 114, p. 574–577, 1985. DOI: 10.9750/PSAS.114.574.577. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9178. Acesso em: 25 apr. 2024.