IAN MCCALLUM, R. Patrick Ruthven, Alchemist and Physician. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 134, p. 471–490, 2005. DOI: 10.9750/PSAS.134.471.490. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9614. Acesso em: 25 apr. 2024.