FORREST, James. Notice of the Gallow Hill, Auchterless, and of Circular Foundations and Tumuli, and various Relics discovered there. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 9, p. 157–161, 1871. DOI: 10.9750/PSAS.009.157.161. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5506. Acesso em: 3 may. 2024.