SIMPSON, James. Stone Circles near Shap, Westmoreland. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 4, p. 443–449, 1863. DOI: 10.9750/PSAS.004.443.449. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/4879. Acesso em: 22 nov. 2024.