Curle, Alexander O. “A Viking Settlement at Freswick, Caithness: Report on the Excavations Carried Out in 1937 and 1938”. Proceedings of the Society of Antiquaries of Scotland 73 (November 30, 1939): 71–110. Accessed November 22, 2024. https://journals.socantscot.org/index.php/psas/article/view/8105.