LAING, David. Account of Lieut-Colonel William Mercer. Author of ’Angliae Speculum; or England’s Looking-Glasse.’ London. 1646. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 3, p. 341–357, 1862. DOI: 10.9750/PSAS.003.341.357. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/4530. Acesso em: 2 may. 2024.