BURTON, John; CLOSE-BROOKS, Joanna. Excavation of a standing stone at Deepdale, Stromness, Orkney. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 109, p. 357–360, 1980. DOI: 10.9750/PSAS.109.357.360. Disponível em: https://journals.socantscot.org/index.php/psas/article/view/9004. Acesso em: 25 apr. 2024.