BRUCE, John. Notice of Remarkable Groups of Archaic Sculpturings in Dumbartonshire and Stirlingshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 30, p. 205–209, 1896. DOI: 10.9750/PSAS.030.205.209. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6620. Acesso em: 25 apr. 2024.