CHILDE, V Gordon. Final Report on the Excavation of the Stone Circle at Old Keig, Aberdeenshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 68, p. 372–393, 1934. DOI: 10.9750/PSAS.068.372.393. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7917. Acesso em: 20 apr. 2024.