Ancient Sculpturings in Tiree. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 56, p. 118–126, 1922. DOI: 10.9750/PSAS.056.118.126. Disponível em: https://soas-test.journals.ed.ac.uk/index.php/psas/article/view/7539. Acesso em: 27 oct. 2025.