RITCHIE, James. Stone Circles at Raedykes, near Stonehaven, Kincardineshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 57, p. 20–28, 1923. DOI: 10.9750/PSAS.057.20.28. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7557. Acesso em: 19 apr. 2024.