CHILDE, V Gordon. Trial Excavations at the Old Keig Stone circle, Aberdeenshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 67, p. 37–53, 1933. DOI: 10.9750/PSAS.067.37.53. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7870. Acesso em: 19 apr. 2024.