Notice of a Cup-marked Stone recently found at Gallow Hill, Parish of Cargill. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 31, p. 290–292, 1897. DOI: 10.9750/PSAS.031.290.292. Disponível em: https://soas-test.journals.ed.ac.uk/index.php/psas/article/view/6671. Acesso em: 26 oct. 2025.