Notes of the Excavation of the Stone Circle at Crichie, Aberdeenshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 18, p. 319–325, 1884. DOI: 10.9750/PSAS.018.319.325. Disponível em: https://soas-test.journals.ed.ac.uk/index.php/psas/article/view/6112. Acesso em: 27 oct. 2025.