MUNRO, Robert. Notes of a Visit to a Terp Mound at Aalzum, in North Friesland, Holland. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 23, p. 98–105, 1889. DOI: 10.9750/PSAS.023.98.105. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/6314. Acesso em: 27 apr. 2024.