Old Cromarty Castle. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 82, p. 60–68, 1950. DOI: 10.9750/PSAS.082.60.68. Disponível em: https://soas-test.journals.ed.ac.uk/index.php/psas/article/view/8300. Acesso em: 27 oct. 2025.