PETER, James. Notes on some Stone Instruments from Aberdeenshire, now presented to the Museum. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 16, p. 436–438, 1882. DOI: 10.9750/PSAS.016.436.438. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6027. Acesso em: 21 may. 2024.