THOMSON, William. An Account of the Ancient Crosier of St Fillans, described in a Letter from William Thomson, A.M. Student of Christ Church, in Oxford, to the Earl of Buchan. Archaeologia Scotica, [S. l.], v. 3, p. 289–291, 1832. Disponível em: https://journals.socantscot.org/index.php/arch-scot/article/view/235. Acesso em: 3 may. 2024.