ANNAN, Robert. Notes on the Antiquities of Kinross-shire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 3, p. 375–390, 1862. DOI: 10.9750/PSAS.003.375.390. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/4534. Acesso em: 5 may. 2024.