CRAW, John Hewat. On a Jet Necklace from a Cist at Poltalloch, Argyll: Including Appendices. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 63, p. 154–189, 1929. DOI: 10.9750/PSAS.063.154.189. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7755. Acesso em: 3 may. 2024.