Glasgow Cathedral in the Thirteenth Century, from an Ancient Seal: With Sidelights on Contemporary History. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 52, p. 151–158, 1918. DOI: 10.9750/PSAS.052.151.158. Disponível em: https://soas-test.journals.ed.ac.uk/index.php/psas/article/view/7426. Acesso em: 27 oct. 2025.