GRAHAM, Angus. Archaeological notes on some harbours in Eastern Scotland. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 101, p. 200–285, 1971. DOI: 10.9750/PSAS.101.200.285. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8755. Acesso em: 4 may. 2024.