BOOG WATSON, Charles Brodie. The Black Turnpike. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 74, p. 116–123, 1940. DOI: 10.9750/PSAS.074.116.123. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8132. Acesso em: 18 may. 2024.