SIMPSON, W Douglas. A New Survey of Kildrummy Castle. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 62, p. 36–80, 1928. DOI: 10.9750/PSAS.062.36.80. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7737. Acesso em: 20 apr. 2024.