CHILDE, V Gordon. Excavations at Castlelaw Fort, Midlothian. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 67, p. 362–388, 1933. DOI: 10.9750/PSAS.067.362.388. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/7889. Acesso em: 26 apr. 2024.