PETER, James; FERGUSON, William. Notes on an Oaken Spade found in a Moss at Cruden, Aberdeenshire. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 11, p. 445–447, 1876. DOI: 10.9750/PSAS.011.445.447. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/5757. Acesso em: 30 apr. 2024.