BROWN, Iain Gordon; VASEY, Peter G. Arthur’s O’on again: newly-discovered drawings by John Adair and their context. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 119, p. 353–360, 1990. DOI: 10.9750/PSAS.119.353.360. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9369. Acesso em: 25 apr. 2024.