BOYLE, Mary E. Suggestions for the Dates of Four Scottish Monuments. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 72, p. 115–121, 1938. DOI: 10.9750/PSAS.072.115.121. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8090. Acesso em: 25 apr. 2024.