GILRUTH, J D. The Abbey of Aberbrothock: Two Early Thirteenth-Century Seals. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 72, p. 56–67, 1938. DOI: 10.9750/PSAS.072.56.67. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8080. Acesso em: 26 apr. 2024.