SIMPSON, W Douglas. Notes on Five Donside Castles. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 55, p. 135–149, 1921. DOI: 10.9750/PSAS.055.135.149. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7510. Acesso em: 2 may. 2024.