CHRISTISON, David. The Prehistoric Forts &c. of Ayrshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 27, p. 381–405, 1893. DOI: 10.9750/PSAS.027.381.405. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6524. Acesso em: 5 may. 2024.