BALFOUR, John A. The Ecclesiastical Remains on the Holy Isle, Arran. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 43, p. 147–158, 1909. DOI: 10.9750/PSAS.043.147.158. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7141. Acesso em: 25 apr. 2024.