GRAHAM, Angus; FEACHEM, Richard W. The Deil’s Dyke in Dumfriesshire and Ayrshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 88, p. 137–154, 1956. DOI: 10.9750/PSAS.088.137.154. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8466. Acesso em: 14 jun. 2024.