GOUDIE, Gilbert; DRYDEN, Henry. An Underground Gallery recently discovered in the Island of Tiree: With a note of another in the same island. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 51, p. 100–108, 1917. DOI: 10.9750/PSAS.051.100.108. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7410. Acesso em: 19 apr. 2024.