TRAILL, H L Norton. Some Observations regarding the Use of Armorial Bearings by the Native Families of Orkney. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 56, p. 301–318, 1922. DOI: 10.9750/PSAS.056.301.318. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7544. Acesso em: 3 may. 2024.