MILLAR, Adam H. Notes on the Ancient Burgh Seal of Crail, and the Seal of the Chapter of the Abbey of Coupar. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 37, p. 160–165, 1903. DOI: 10.9750/PSAS.037.160.165. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6870. Acesso em: 24 apr. 2024.