INNES, Cosmo. Note of the Original Matrix of the Seal of the Burgh of Aberdeen, A.D. 1430. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 5, p. 138–140, 1864. DOI: 10.9750/PSAS.005.138.140. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5121. Acesso em: 2 may. 2024.