CLOUSTON, J Storer. The Orkney Bailies and their Wattel. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 55, p. 265–272, 1921. DOI: 10.9750/PSAS.055.265.272. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7516. Acesso em: 5 may. 2024.