FERNIE, Eric. Early church architecture in Scotland. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 116, p. 393–411, 1987. DOI: 10.9750/PSAS.116.393.411. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9275. Acesso em: 11 may. 2024.