SMITH, John. Note of an Underground Building formerly discovered in Edinburghshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 8, p. 27–28, 1869. DOI: 10.9750/PSAS.008.27.28. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5391. Acesso em: 27 apr. 2024.