Traill, W. (1891) “Results of Excavations at the Broch of Burrian, North Ronaldsay, Orkney, during the Summers of 1870 and 1871”, Archaeologia Scotica, 5, pp. 341–364. Available at: https://journals.socantscot.org/index.php/arch-scot/article/view/325 (Accessed: 23 November 2024).