HARVEY, James. Notes on Some Undescribed Cup-Marked Rocks at Duntocher, Dumbartonshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 23, p. 130–137, 1889. DOI: 10.9750/PSAS.023.130.137. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6320. Acesso em: 5 may. 2024.