WORMALD, Francis. A Fragment of a Thirteenth-century Calendar from Holyrood Abbey. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 69, p. 471–479, 1935. DOI: 10.9750/PSAS.069.471.479. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7956. Acesso em: 4 may. 2024.