GORDON, C A. Notes: (2) Carved stone at Cross-Stone, Ellon. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 89, p. 444, 1958. DOI: 10.9750/PSAS.089.444. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8503. Acesso em: 18 apr. 2024.