EWART, Gordon; GALLAGHER, Dennis; RITCHIE, Anna. The Dupplin Cross: recent investigations. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 137, p. 319–335, 2008. DOI: 10.9750/PSAS.137.319.335. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9703. Acesso em: 13 jun. 2024.