SIMPSON, W Douglas. Edzell Castle. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 65, p. 115–173, 1931. DOI: 10.9750/PSAS.065.115.173. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7812. Acesso em: 30 apr. 2024.