LYFORD-PYKE, J D. The cup-marked stones of North Uist and Benbecula. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 75, p. 127–144, 1941. DOI: 10.9750/PSAS.075.127.144. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8157. Acesso em: 26 apr. 2024.