NEISH, James; STUART, John. Reference Notes to Plan and Views of Ancient Remains on the Summit of the Laws, Forfarshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 3, p. 440–454, 1862. DOI: 10.9750/PSAS.003.440.454. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/4542. Acesso em: 16 jun. 2024.