SIMPSON, W Douglas. Pitsligo Castle, Rosehearty, Aberdeenshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 88, p. 125–129, 1956. DOI: 10.9750/PSAS.088.125.129. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8464. Acesso em: 18 apr. 2024.