PETRIE, W M Flinders. Ptolemy’s Geography of Albion. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 52, p. 12–26, 1918. DOI: 10.9750/PSAS.052.12.26. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7433. Acesso em: 23 apr. 2024.