LANG, James T. Hogback monuments in Scotland. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 105, p. 206–235, 1975. DOI: 10.9750/PSAS.105.206.235. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8883. Acesso em: 25 apr. 2024.