DOWDEN, John. An Examination of Original Documents on the Question of the form of the Celtic Tonsure. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 30, p. 325–337, 1896. DOI: 10.9750/PSAS.030.325.337. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6630. Acesso em: 26 apr. 2024.