PETER, James. Notice of Stone Circles in the Parish of Old Deer. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 19, p. 370–377, 1885. DOI: 10.9750/PSAS.019.370.377. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6161. Acesso em: 29 apr. 2024.