PIGGOTT, Stuart; PIGGOTT, Cecily Margaret. Excavation at Braidwood Fort, Midlothian and Craig’s Quarry, Dirleton, East Lothian. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 91, p. 61–77, 1960. DOI: 10.9750/PSAS.091.61.77. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/8549. Acesso em: 26 apr. 2024.