STUART, John. Notice of the Church of St Congan at Turriff, in Aberdeenshire, and of a Fresco of St Ninian discovered in it in December 1861. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 6, p. 427–433, 1865. DOI: 10.9750/PSAS.006.427.433. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5213. Acesso em: 21 may. 2024.