SIMPSON, W Douglas. Drochil Castle and the Plan Tout Une Masse. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 86, p. 70–80, 1954. DOI: 10.9750/PSAS.086.70.80. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8408. Acesso em: 26 apr. 2024.